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Shrimp Scampi with Garlic Butter and Lemon
Sautéed shrimp in a rich garlic butter sauce with a hint of lemon and herbs—perfect over sautéed zucchini noodles. See more
Photo of Shrimp Scampi with Garlic Butter and Lemon
Linda

10-9-8-7-6-5-4-3-2-1 reps for time of:

1-½ bodyweight deadlifts
Bodyweight bench presses
¾ bodyweight squat cleans

See more
Intermittent Fasting & Muscle Quality
Can we preserve muscle while eating less often? See more
Thai Chicken Skewers with “Peanut” Sauce
Grilled chicken skewers marinated in Thai-inspired spices and served with a rich, creamy almond butter dipping sauce. See more
Photo of Thai Chicken Skewers with “Peanut” Sauce
5 rounds for time:

Bike 20 calories
20 single-arm overhead lunges

See more
The energy resistance principle
Martin Picard expands the biological case for energy resistance at the cellular level See more
Japanese Curry Beef Bowl
Beef simmered in a spiced Japanese-style curry sauce with veggies, served over buttery cauliflower rice. See more
Photo of Japanese Curry Beef Bowl
Rest

Rest day

See more
Effects of a low carbohydrate diet on energy expenditure during weight loss maintenance
High-carb diets resulted in a metabolic slow-down compared to low-carb See more
Chicken Greek Salad with Lemon-Herb Dressing
Grilled herb-marinated chicken breast served over a vibrant Greek salad, finished with a tangy lemon and olive oil dressing. See more
Photo of Chicken Greek Salad with Lemon-Herb Dressing
For time:

21 thrusters
3 pull-ups
3 thrusters
21 pull-ups
18 thrusters
6 pull-ups
6 thrusters
18 pull-ups
15 thrusters
9 pull-ups
9 thrusters
15 pull-ups
12 thrusters
12 pull-ups

See more
Food consumption and the actual statistics of cardiovascular diseases
A broad cross-country analysis revisits—and overturns—the conclusions drawn from Ancel Keys’ Seven Countries Study See more
Cod with Spinach & Garlic Cream Skillet
Flaky cod fillets simmered in a buttery garlic cream sauce with wilted spinach. See more
Photo of Cod with Spinach & Garlic Cream Skillet
3 rounds for time:

35 GHD sit-ups
35-cal row

See more
Spotting Soda’s Sticky Fingerprints
Big Soda has a history of cleverly concealing their influence in the health and fitness space by funneling sponsorship through proxy organizations. See more
Chorizo and Cauliflower Hash
Spicy chorizo sautéed with riced cauliflower, peppers, and onions. See more
Photo of Chorizo and Cauliflower Hash
The Total

Back squat 1-1-1 reps
Shoulder press 1-1-1 reps
Deadlift 1-1-1 reps

See more
Eating for Performance
The path to elite performance requires weighing and measuring See more
Everything Bagel Crusted Salmon
Oven-baked salmon fillets coated in butter and everything bagel seasoning for a crunchy, savory crust with a creamy tangy finish. See more
Photo of Everything Bagel Crusted Salmon
Rest

Rest day

See more
Why fat oxidation and performance don’t follow the classic “crossover” rules
Low carbohydrate high fat ketogenic diets on the exercise crossover point and glucose homeostasis See more
Lemon and Herb Chicken Drumsticks
Chicken drumsticks marinated in lemon, garlic, and fresh herbs, then roasted until golden and tender. See more
Photo of Lemon and Herb Chicken Drumsticks
Cindy, Strict!

Complete as many rounds as possible in 20 minutes of:

5 strict pull-ups
10 honest push-ups
15 squats

See more
The fall of a prolific science journal
An investigation reveals how industrial-scale publishing turned scientific output into a billion-dollar business. See more
Creamy Dijon Lamb Chops
Seared lamb chops finished with a luscious Dijon mustard cream sauce. See more
Photo of Creamy Dijon Lamb Chops
For time:

25 box jumps
25 toes-to-bars
25 jump-touch burpees
25 push presses
25 hang squat cleans
25 box jumps
25 toes-to-bars
25 jump-touch burpees
25 push presses
25 box jumps
25 toes-to-bars
25 jump-touch burpees
25 box jumps
25 toes-to-bars
25 box jumps

See more
2025 at MetFix and BSI
A year-end review See more
Beef with Krispy Kale Salad
Seared beef strips served over crispy roasted kale, tossed with Parmesan, almonds, and a light lemon-garlic dressing. See more
Photo of Beef with Krispy Kale Salad
For load:

Snatch 1-1-1-1-1-1-1 reps

See more
New Online Course
The BSI Critical Thinking Class See more
Linda

10-9-8-7-6-5-4-3-2-1 reps for time of:

1-½ bodyweight deadlifts
Bodyweight bench presses
¾ bodyweight squat cleans

Set up three bars and storm through for time.

See more
5 rounds for time:

Bike 20 calories
20 single-arm overhead lunges

Use a dumbbell that is challenging.

See more
Rest

Rest day

Enjoy the recovery time, or make-up anything you missed from last week.

See more
For time:

21 thrusters
3 pull-ups
3 thrusters
21 pull-ups
18 thrusters
6 pull-ups
6 thrusters
18 pull-ups
15 thrusters
9 pull-ups
9 thrusters
15 pull-ups
12 thrusters
12 pull-ups

Men use 75 lb.
Women use 55 lb.

See more
3 rounds for time:

35 GHD sit-ups
35-cal row

Additionally, practice handstands for 20 minutes.

See more
The Total

Back squat 1-1-1 reps
Shoulder press 1-1-1 reps
Deadlift 1-1-1 reps

Warm up for each, then take 3 attempts at each lift, trying to set a 1-rep-max.

See more
Rest

Rest day

Enjoy the recovery time, or make-up anything you missed from last week.

See more
Cindy, Strict!

Complete as many rounds as possible in 20 minutes of:

5 strict pull-ups
10 honest push-ups
15 squats

Additionally, stretch for 20 minutes.

See more
For time:

25 box jumps
25 toes-to-bars
25 jump-touch burpees
25 push presses
25 hang squat cleans
25 box jumps
25 toes-to-bars
25 jump-touch burpees
25 push presses
25 box jumps
25 toes-to-bars
25 jump-touch burpees
25 box jumps
25 toes-to-bars
25 box jumps

Men use a 24” box, press and clean 115 lb.
Women use a 20” box, press and clean 85 lb.

See more
For load:

Snatch 1-1-1-1-1-1-1 reps

Additionally, practice L-sits for 10 minutes and planks for another 10 minutes.

See more
Shrimp Scampi with Garlic Butter and Lemon
Sautéed shrimp in a rich garlic butter sauce with a hint of lemon and herbs—perfect over sautéed zucchini noodles. See more

Ingredients

1½ Tbsp butter or tallow (for sautéing)
¾ lb raw shrimp, peeled and deveined
Salt and pepper, to taste
½ tsp garlic powder
2 cloves garlic, minced
1 Tbsp lemon juice
½ tsp lemon zest
¼ cup chicken broth (no sugar added)
¼ tsp red pepper flakes (optional)
1 Tbsp chopped fresh parsley
Optional: 1 tsp olive oil (cold drizzle for finishing)
¾ cup sautéed zucchini noodles (cooked in butter)

Macronutrients
(per serving, makes 2)

Protein: 32g
Fat: 20g
Carbs: 4g

Photo of Shrimp Scampi with Garlic Butter and Lemon
Thai Chicken Skewers with “Peanut” Sauce
Grilled chicken skewers marinated in Thai-inspired spices and served with a rich, creamy almond butter dipping sauce. See more

Ingredients

For the Chicken Skewers:
1 lb chicken thighs, cut into 1½-inch chunks
1 Tbsp coconut aminos
1 Tbsp lime juice
1 tsp fish sauce (no sugar added)
1 tsp grated ginger
1 clove garlic, minced
½ tsp ground coriander
¼ tsp chili flakes (optional)
Salt, to taste
1 Tbsp melted ghee or butter (for grilling)
Bamboo skewers, soaked if grilling

For the "Peanut" Sauce:
2 Tbsp almond butter (or natural peanut butter if not paleo)
1 Tbsp coconut aminos
1 tsp lime juice
½ tsp grated ginger
½ clove garlic, finely minced
1½ Tbsp warm water (to thin)
Pinch of salt
Optional: ¼ tsp chili flakes or hot sauce for heat

Macronutrients
(per serving, makes 2)

Protein: 46g
Fat: 34g
Carbs: 5g

Photo of Thai Chicken Skewers with “Peanut” Sauce
Japanese Curry Beef Bowl
Beef simmered in a spiced Japanese-style curry sauce with veggies, served over buttery cauliflower rice. See more

Ingredients

For the Curry Beef:
6 oz beef sirloin or chuck, thinly sliced
1 Tbsp ghee or butter
¼ cup onion, thinly sliced
¼ cup zucchini or daikon radish, diced (instead of potato)
¼ cup carrot, finely chopped (optional, minimal carb impact)
1 clove garlic, minced
1 tsp fresh ginger, grated
1 tsp curry powder (Japanese style or mild madras)
½ tsp turmeric
1 cup beef broth (no sugar added)
1 tsp coconut aminos
Salt and pepper, to taste

For the Cauliflower Rice:
1 cup cauliflower rice
1 Tbsp butter
Salt, to taste

Optional Garnish:
Sliced scallions or pickled ginger

Macronutrients

Protein: 42g
Fat: 40g
Carbs: 10g

Photo of Japanese Curry Beef Bowl
Chicken Greek Salad with Lemon-Herb Dressing
Grilled herb-marinated chicken breast served over a vibrant Greek salad, finished with a tangy lemon and olive oil dressing. See more

Ingredients

For the Chicken:
6 oz chicken breast, butterflied
1 Tbsp butter (for cooking)
½ tsp dried oregano
½ tsp garlic powder
¼ tsp black pepper
Salt, to taste

For the Greek Salad:
½ cup cucumber, diced
¼ cup cherry tomatoes, halved
¼ cup red bell pepper, chopped
2 Tbsp red onion, thinly sliced
¼ cup Kalamata olives, halved
¼ cup feta cheese, crumbled

For the Lemon-Herb Dressing:
2 Tbsp olive oil (for finishing)
1 Tbsp lemon juice
½ tsp dried oregano
¼ tsp dried thyme
¼ tsp garlic powder
Salt and black pepper, to taste

Macronutrients

Protein: 44g
Fat: 50g
Carbs: 8g

Photo of Chicken Greek Salad with Lemon-Herb Dressing
Cod with Spinach & Garlic Cream Skillet
Flaky cod fillets simmered in a buttery garlic cream sauce with wilted spinach. See more

Ingredients

For the Cod & Sauce:
4 cod fillets (6 oz each, skinless)
2 Tbsp butter or beef tallow (for searing)
3 cloves garlic, minced
½ cup chicken broth (unsalted)
1 cup heavy cream
½ cup grated Parmesan cheese
½ tsp smoked paprika
½ tsp red pepper flakes (optional)
Salt and black pepper, to taste

For the Spinach:
3 cups fresh spinach
1 Tbsp butter

Optional Garnish:
Fresh parsley, chopped
Lemon wedges

Macronutrients
(per serving, serves 4)

Protein: 37g
Fat: 23g
Carbs: 4g

Photo of Cod with Spinach & Garlic Cream Skillet
Chorizo and Cauliflower Hash
Spicy chorizo sautéed with riced cauliflower, peppers, and onions. See more

Ingredients

For the Hash:
1 lb fresh chorizo (casings removed if in links)
2 Tbsp butter or tallow
1 small onion, diced
1 red bell pepper, diced
1 green bell pepper, diced
3 cloves garlic, minced
1 medium head cauliflower, riced (about 4 cups)
1 tsp smoked paprika
½ tsp cumin
Salt and black pepper, to taste

Optional Garnish & Add-ons:
Fresh cilantro, chopped
Avocado slices
Fried or poached eggs on top
Hot sauce or salsa

Macronutrients
(per serving, serves 4)

Protein: 25g
Fat: 28g
Carbs: 8g

Photo of Chorizo and Cauliflower Hash
Everything Bagel Crusted Salmon
Oven-baked salmon fillets coated in butter and everything bagel seasoning for a crunchy, savory crust with a creamy tangy finish. See more

Ingredients

For the Salmon:
4 salmon fillets (6 oz each, skin-on or skinless)
2 Tbsp butter, melted
3 Tbsp everything bagel seasoning (store-bought or homemade mix of sesame seeds, poppy seeds, dried garlic, dried onion, and sea salt)
½ tsp smoked paprika (optional, for depth)
Salt and black pepper, to taste

For the Sauce:
½ cup sour cream or Greek yogurt
1 Tbsp lemon juice
1 tsp Dijon mustard
1 Tbsp fresh dill or chives, chopped
Salt and pepper, to taste

Optional Garnish:
Lemon wedges
Extra fresh dill

Macronutrients
(per serving, serves 4)

Protein: 42g
Fat: 29g
Carbs: 3g

Photo of Everything Bagel Crusted Salmon
Lemon and Herb Chicken Drumsticks
Chicken drumsticks marinated in lemon, garlic, and fresh herbs, then roasted until golden and tender. See more

Ingredients

For the Chicken:
2 lbs chicken drumsticks (about 8–10 pieces)
2 Tbsp butter or tallow (melted, for roasting)
Salt and black pepper, to taste

For the Marinade:
¼ cup olive oil
2 Tbsp lemon juice (freshly squeezed)
1 Tbsp lemon zest
3 cloves garlic, minced
2 tsp fresh thyme (or 1 tsp dried)
2 tsp fresh rosemary, chopped (or 1 tsp dried)
2 tsp fresh parsley, chopped
½ tsp paprika
½ tsp chili flakes (optional, for heat)

Optional Garnish:
Fresh parsley or dill, chopped
Extra lemon wedges

Macronutrients
(per serving, serves 4)

Protein: 32g
Fat: 17g
Carbs: 2g

Photo of Lemon and Herb Chicken Drumsticks
Creamy Dijon Lamb Chops
Seared lamb chops finished with a luscious Dijon mustard cream sauce. See more

Ingredients

For the Lamb Chops:
8 lamb rib chops (about 1 inch thick)
2 Tbsp butter or tallow
2 cloves garlic, minced
1 tsp fresh rosemary, chopped (or ½ tsp dried)
1 tsp fresh thyme, chopped (or ½ tsp dried)
Salt and black pepper, to taste

For the Dijon Cream Sauce:
2 Tbsp butter
2 shallots, finely minced
2 cloves garlic, minced
½ cup dry white wine (or chicken broth)
1 cup heavy cream
2 Tbsp Dijon mustard
1 tsp whole-grain mustard (optional, for texture)
Salt and black pepper, to taste

Optional Garnish:
Fresh parsley, chopped
Lemon wedges

Macronutrients
(per serving, serves 4)

Protein: 43g
Fat: 49g
Carbs: 5g

Photo of Creamy Dijon Lamb Chops
Beef with Krispy Kale Salad
Seared beef strips served over crispy roasted kale, tossed with Parmesan, almonds, and a light lemon-garlic dressing. See more

Ingredients

For the Beef:
1 ½ lbs flank steak or sirloin, sliced thin against the grain
2 Tbsp butter or tallow
2 cloves garlic, minced
1 tsp smoked paprika
1 tsp soy sauce or coconut aminos
Salt and black pepper, to taste

For the Krispy Kale Salad:
8 cups kale, stems removed, torn into bite-sized pieces
2 Tbsp olive oil (or avocado oil)
½ tsp sea salt
½ cup shaved Parmesan cheese
¼ cup sliced almonds (or walnuts)

For the Dressing:
3 Tbsp olive oil
1 Tbsp lemon juice
1 tsp Dijon mustard
1 clove garlic, minced
Salt and pepper, to taste

Optional Garnish:
Extra Parmesan
Fresh cracked black pepper

Macronutrients
(per serving, serves 4)

Protein: 45g
Fat: 34g
Carbs: 7g

Photo of Beef with Krispy Kale Salad
Intermittent Fasting & Muscle Quality
Can we preserve muscle while eating less often?
Intermittent fasting (IF) is widely used for weight loss and metabolic health, but its impact on skeletal muscle depends on how it is implemented. Because fasting reduces insulin and amino acid availability—two key regulators of muscle protein balance—it inherently shifts muscle toward a more catabolic state, particularly during prolonged fasts. Evidence from mechanistic studies and clinical trials shows that whole-day fasting approaches such as alternate-day fasting and the 5:2 diet carry a higher risk of lean mass loss, as reductions in daily muscle protein synthesis are not fully compensated for during subsequent feeding periods.

See more
The energy resistance principle
Martin Picard expands the biological case for energy resistance at the cellular level
In this review, Martin Picard and Nirosha Murugan develop the Energy Resistance Principle (ERP), the idea that many chronic diseases are driven not by a lack of energy, but by impaired cellular ability to use, sense, and allocate energy appropriately. Drawing on mitochondrial biology, stress physiology, and metabolic regulation, the authors describe how cells can become “energy resistant,” with disrupted energy signaling even in the presence of abundant nutrients and oxygen.

See more
Effects of a low carbohydrate diet on energy expenditure during weight loss maintenance
High-carb diets resulted in a metabolic slow-down compared to low-carb
In this randomized controlled trial, adults first lost about 10–12% of their body weight on a calorie-restricted diet and were then assigned to low-, moderate-, or high-carbohydrate diets for 20 weeks while calories and protein were adjusted to maintain weight. Total daily energy expenditure was measured using doubly labeled water. Those consuming the high-carbohydrate diet showed a significantly greater reduction in energy expenditure than those eating low-carbohydrate diets.

See more
Food consumption and the actual statistics of cardiovascular diseases
A broad cross-country analysis revisits—and overturns—the conclusions drawn from Ancel Keys’ Seven Countries Study
In this ecological study, Pavel Grasgruber and colleagues reassessed the relationship between diet and cardiovascular disease using food consumption and health outcome data from more than 40 European countries, dramatically expanding the scope of analysis beyond the seven countries selected by Ancel Keys in his influential Seven Countries Study. Whereas Keys based his conclusions on a small, non-random subset of nations, the authors examined all countries for which reliable data were available, allowing the diet–heart hypothesis to be tested against a far more comprehensive and representative dataset.

See more
Spotting Soda’s Sticky Fingerprints
Big Soda has a history of cleverly concealing their influence in the health and fitness space by funneling sponsorship through proxy organizations.
While ‘calories in, calories out’ appears to be a logical explanation for weight gain, the actual causes of chronic diseases like diabetes and obesity are more complex. The toxicity of sugar plays a huge role, but Coca-Cola and Pepsico have gone to great lengths to hide that fact. Through organizations like the Global Energy Balance Network, Coca-Cola sought to improve soda’s image by shifting the blame away from consumption of sugar, and towards a lack of exercise.

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Eating for Performance
The path to elite performance requires weighing and measuring
In this 2007 lecture, Greg Glassman stresses that to achieve elite athletic performance, one must weigh and measure the recommended diet of “meat and vegetables nuts and seeds some fruit little starch no sugar”. He asserts that while following the diet without weighing and measuring may keep a person from “optimize[ing] their output”, those who practice this gain the “accuracy and precision” needed to enter the “jet stream of elite performance”. Coach states that of the tens of thousands of people he has worked with, none have shown “superior capacity on a diet where they didn’t weigh and measure”. He says there is a “one-to-one correspondence between elite CrossFit performance and accuracy and precision to the consumption”.

See more
Why fat oxidation and performance don’t follow the classic “crossover” rules
Low carbohydrate high fat ketogenic diets on the exercise crossover point and glucose homeostasis
In this comprehensive review, Noakes, Volek, D’Agostino and colleagues synthesize a large body of controlled trials and metabolic studies showing that low-carbohydrate, high-fat (ketogenic) diets fundamentally alter how athletes fuel exercise. Contrary to the long-standing “crossover” concept—which holds that carbohydrate must dominate energy production at moderate to high intensities—the authors document that keto-adapted athletes can sustain very high rates of fat oxidation at intensities well above 80–85% VO₂max, without impairing performance. These findings challenge the assumption that carbohydrates are an obligatory fuel for high-intensity exercise.

See more
The fall of a prolific science journal
An investigation reveals how industrial-scale publishing turned scientific output into a billion-dollar business.
This El País investigation examines the collapse of a once-high-output scientific journal, using it as a case study to expose the financial incentives and structural flaws of modern academic publishing. Publishers can generate enormous profits by prioritizing volume over rigor, relying on article-processing fees, lax peer review, and aggressive expansion to flood the literature with papers of uneven quality. As submissions surged, editorial oversight weakened, warnings from researchers were ignored, and credibility ultimately collapsed under the weight of retractions and scrutiny.

See more
2025 at MetFix and BSI
A year-end review
2025 has been a milestone year for MetFix. Over the past twelve months we’ve launched our Foundations Seminar, expanded our affiliate community globally, and introduced multiple new resources to help coaches and individuals alike master metabolic health.

See more
New Online Course
The BSI Critical Thinking Class
This course confronts why so much modern “science” inspires confidence but fails under testing—showing how weak reasoning, misuse of statistics, and deference to authority undermine real knowledge. You’ll learn practical tools in logic, induction, and probability to evaluate claims based on predictive power rather than credentials, across domains like medicine, policy, and everyday decisions. The class goal is to help you think more clearly, navigate uncertainty, and become much harder to fool.

See more
Shrimp Scampi with Garlic Butter and Lemon

Sautéed shrimp in a rich garlic butter sauce with a hint of lemon and herbs—perfect over sautéed zucchini noodles.

See more
Photo of Shrimp Scampi with Garlic Butter and Lemon
Linda

10-9-8-7-6-5-4-3-2-1 reps for time of:

1-½ bodyweight deadlifts
Bodyweight bench presses
¾ bodyweight squat cleans

See more
Intermittent Fasting & Muscle Quality

Can we preserve muscle while eating less often?

See more