Former NFL strength coach and Division 1 athlete John Heck recently shared game-changing insights about nutrition, training, and body composition that challenge conventional wisdom.
With over 15 years of experience coaching elite athletes at the highest levels, Heck brings a unique perspective that bridges the gap between bodybuilding principles and athletic performance.
His approach to getting—and staying—lean might surprise you, especially if you’ve been avoiding carbohydrates.
The conversation reveals practical strategies that work for everyone from weekend warriors to professional athletes looking to optimize their physique and performance.
Jump to:
- The Carbohydrate Myth That’s Holding You Back
- Building Metabolism Through Strategic Dieting
- Carbohydrates: The Forgotten Anabolic Weapon
- Movement Matters More Than You Think
- College vs. Professional Training Philosophies
- The Transfer Portal Changed Everything
- Olympic Lifts: Valuable But Not Essential
- Culture Trumps Programming
- Practical Nutrition Guidelines
- The Alcohol Factor
- Building Your Forever-Lean Body
The Carbohydrate Myth That’s Holding You Back
One of the biggest misconceptions in nutrition, according to Heck, centers around carbohydrates.
I think the biggest kind of misconception myth out there within nutrition is sort of this fear of carbohydrates.
The anti-carb narrative has dominated fitness culture for years, with countless people cutting carbs after 5 PM or eliminating them entirely. But Heck argues this approach is fundamentally flawed for those seeking to build muscle and maintain leanness.
Instead of avoiding carbs, Heck advocates turning your body into a “carbohydrate processing machine.” This metabolic adaptation becomes the foundation for achieving and maintaining an impressive physique.
Building Metabolism Through Strategic Dieting
Heck’s personal transformation illustrates the power of metabolic development. Despite weighing the same as his football-playing days, his body composition has drastically improved—and he’s eating more food than ever before.
The secret lies in periodizing nutrition similarly to training, cycling through distinct phases:
- Cutting phases where body fat drops to extremely low levels
- Reverse dieting to gradually rebuild metabolism
- Maintenance periods to stabilize at new set points
- Gain phases focused on muscle development
I think if you diet down and just really, really lean one time, it sets you up to stay lean forever.
Understanding Reverse Dieting
Reverse dieting remains confusing for many, but Heck breaks it down simply. After an aggressive cut, your metabolism downregulates significantly—your body doesn’t understand you’re dieting, it only senses starvation.
Physical signs of metabolic slowdown include feeling colder, reduced desire to move, and mental fog. By the end of a 16-week diet, you might maintain body weight on 1,500 fewer calories than before.
Jumping immediately back to pre-diet calorie levels creates a massive surplus, rapidly adding body fat. Reverse dieting involves slowly increasing calories over several weeks, allowing metabolism to recover without excessive fat gain.
Carbohydrates: The Forgotten Anabolic Weapon
While protein gets all the attention for muscle building, Heck argues carbohydrates deserve the spotlight.
Leveraging carbohydrates, I think, is a better weapon for anabolism even than protein.
The ceiling for protein’s direct impact on muscle protein synthesis is lower than most people think. Meanwhile, carbohydrates serve multiple anabolic functions that protein simply cannot replicate.
Saturated glycogen stores improve force production, enhance mechanical leverage through fuller muscles, and accelerate recovery between training sessions. Insulin release from carbohydrate consumption shuttles amino acids, electrolytes, and fluids into muscle tissue, creating an intensely anabolic environment.
Historical evidence supports this approach—Eastern Bloc lifters consumed only 15% of calories from protein while staying big, muscular, and lean. Their secret? Prioritizing carbohydrates over excessive protein consumption.
Strategic Protein Manipulation
Heck adjusts protein intake based on training phase. During cutting phases, higher protein helps preserve muscle tissue and controls appetite. In gaining phases with surplus calories from carbohydrates, protein needs actually decrease due to the protein-sparing effect.
He maintains impressive physique on 220-240 grams daily—less than one gram per pound of body weight. The key? Those calories come primarily from quality carbohydrate sources.
Movement Matters More Than You Think
For sedentary individuals wanting to improve body composition, Heck emphasizes one critical factor: movement.
Diet alone struggles to deliver results without physical activity. Exercise doesn’t just burn calories—it fundamentally changes how your body processes nutrients through improved insulin sensitivity.
Even simple walking creates profound metabolic benefits. Muscle contractions drive glucose into cells through the GLUT4 pathway, completely independent of insulin. This becomes especially crucial for people with compromised insulin sensitivity.
Stan Efferding popularized 10-minute post-meal walks for good reason—movement after eating helps digest food and uptakes carbohydrates as glycogen rather than leaving them circulating in the bloodstream.
College vs. Professional Training Philosophies
Having coached at both collegiate and NFL levels, Heck identifies stark differences in approach and expectations.
College strength coaches serve as authority figures, disciplinarians, and culture setters. They work with athletes year-round, creating significant opportunities for development and mentorship.
NFL coaching operates under completely different constraints. Professional athletes scatter during the off-season, training with private coaches across the country. Strength coaches might only get two weeks with the entire team before organized team activities begin.
This compressed timeline eliminates development focus—the goal shifts to keeping multi-million dollar athletes healthy and available throughout the grueling season.
Equipment and Exercise Selection
Machine work, once dismissed by functional training advocates, plays a valuable role at the professional level. Machines accommodate the wear and tear on bodies, eliminate learning curves with roster turnover, and allow safe velocity changes.
Heck’s preferred movements for NFL athletes include:
- Hack squats for full range of motion without spinal loading
- Belt squats and pitch shark variations
- Direct lower leg training for Achilles injury prevention
- Adductor work through Copenhagen variations or machine exercises
- Neck training for concussion prevention
- Overhead pressing instead of bench pressing to reduce injury risk
Week 13 of the season, most players refuse barbells on their backs. Smart programming accommodates this reality rather than fighting it.
The Transfer Portal Changed Everything
Recent developments in college athletics fundamentally altered strength and conditioning approaches. The transfer portal creates massive roster turnover, bringing athletes from diverse programs with varying training backgrounds.
Traditional “slow cooking” over four years became impossible. Coaches now assess athletes from different schools, different training ages, and different preparation levels—all at once.
Some transferred athletes arrive from elite programs in excellent condition. Others look like they’ve never touched a weight. This reality demands simplified, scalable programming rather than complex, technical movements.
Olympic Lifts: Valuable But Not Essential
Despite their popularity in strength and conditioning, Heck questions the necessity of Olympic lifts in team settings.
Teaching proper technique requires weeks of dedicated instruction. Half the incoming freshmen class struggles with the movements while others progress quickly. Coaching resources get stretched thin managing this disparity.
Olympic weightlifting represents a complete sport requiring years of practice. Football players don’t have that luxury.
Alternative approaches deliver similar benefits without the complexity. Heck successfully used trap bar shrug pulls on crash pads with velocity tracking—athletes explosively extend, violently shrug, then control the descent.
Setting a velocity standard (like 1.8 meters per second) creates clear goals and drives competitive intensity without technical barriers.
Culture Trumps Programming
Heck entered strength coaching as a “programming nerd,” believing optimal exercise selection and periodization would determine success.
His time at Troy University with limited resources but exceptional athletes taught a different lesson.
I walked away from football strength and conditioning realizing it’s the intangible art of coaching as a strength coach that I think has a much bigger impact.
Hard, grueling training builds team camaraderie and mental toughness. When athletes endure challenging programs together, they develop trust and cohesion that translates to the field.
Elite athletes respond to almost any intelligent training stimulus. At Division 1 and NFL levels, the genetically gifted will develop with fundamental movements and intense effort.
The real challenge? Managing egos and convincing naturally talented athletes to commit to weight room work they don’t necessarily need for on-field success.
Practical Nutrition Guidelines
Heck’s mentor Justin Harris created a simple framework for food selection: “kill it, pick it, grow it.”
If you can hunt it, fish it, grow it in the ground, or pick it from a tree—it’s safe for your diet. Single-ingredient, non-processed foods naturally regulate calorie intake without tracking.
Nobody gets fat eating lean meat, white rice, oatmeal, and fruit. The leanest population globally—Japan—centers their diet around white rice and fish.
The Fat-Carb Confusion
Americans believe they eat too many carbohydrates, but analysis reveals the truth: most consume excessive fat and sugar, with inadequate protein.
Consider a blueberry muffin—75 grams of carbohydrates but 35 grams of fat. At nine calories per gram of fat versus four per gram of carbohydrate, the muffin contains more calories from fat despite appearing carb-heavy.
Tortilla chips, donuts, pizza—these aren’t high-carb foods. They’re high-fat foods with carbohydrates added.
When Heck recommends carbohydrates, he means white rice, potatoes, oatmeal, fruit, and honey—not processed combinations of fat and sugar.
The Alcohol Factor
If Heck could give one piece of advice to the general population, it would be eliminating or drastically reducing alcohol consumption.
I’ve never met anyone who stopped drinking who’s regretted it.
Beyond empty calories, ethanol is actively catabolic—it breaks down muscle tissue and prevents fat loss. The impact on gut health compounds these problems, with effects lasting up to a week after consumption.
Emerging research on gut health’s importance makes alcohol’s destructive effects increasingly undeniable. Fermented foods like kimchi, sauerkraut, and kefir provide far better options for those seeking gut health optimization.
Building Your Forever-Lean Body
Heck’s philosophy centers on creating sustainable body composition through repeated cycles of strategic dieting and gaining.
Getting extremely lean once establishes a new metabolic baseline. Each subsequent diet becomes easier, ending with more muscle mass than the previous cut. Over years, this repetitive process builds a body that naturally wants to stay lean.
The approach requires patience—people carrying excess body fat for decades need years of consistent work to establish new homeostasis. Quick fixes don’t create lasting change.
His mantra captures the essence: “Be a robot outside of the gym. Be a machine in the gym.”
Outside training, maintain robotic consistency with meals, steps, hydration, and sleep. Inside the gym, bring machine-like intensity, energy, and effort. This combination, sustained over time, creates remarkable transformations that last.
