Book
Nutrient Timing The Future of Sports Nutrition
John Ivy, Robert Portman
Nutrient Timing shows athletes that WHEN they consume nutrients around exercise matters as much as WHAT they consume, dividing the muscle's 24-hour growth cycle into three phases to maximize muscle strength, mass, and recovery.
What it’s about
Written by two respected exercise-nutrition scientists, Nutrient Timing overturns the bulk-nutrition, 'more protein is better' orthodoxy by adding the dimension of time to sports nutrition. Drawing on landmark studies in exercise metabolism, physiology, and molecular biology, the authors demonstrate that muscles pass through an Energy Phase (during exercise), an Anabolic Phase (the 45-minute post-workout 'metabolic window'), and a Growth Phase, each requiring specific nutrient mixtures to optimize insulin sensitivity, glycogen replenishment, protein synthesis, and immune function. The book explains why a carbohydrate/protein supplement taken immediately after training can triple protein synthesis versus the same nutrients delayed by hours, and delivers a fully practical, food-based daily program (complete with meal-plan templates and a caloric calculator) that lets readers break through training plateaus and sculpt a leaner, stronger body without changing total caloric intake.
The through-line
- Who it’s for
- A strength athlete, bodybuilder, coach, or fitness enthusiast who wants to build maximum muscle mass, strength, and power while minimizing fat and recovery time.
- The problem
- Muscle growth and strength gains have plateaued despite hard training and a high-protein diet. Frustration and a false sense of accomplishment from following 'bulk nutrition' advice that isn't delivering results.
- The plan
- Redefine your workout to begin with pre-exercise nutrient intake and divide your muscle cycle into three phases.
- During the Energy Phase, consume a carbohydrate/protein beverage before and during workouts to spare glycogen and limit muscle damage.
- Within 45 minutes after exercise (Anabolic Phase), consume a high-glycemic carbohydrate/protein supplement to exploit the metabolic window.
- During the Growth Phase, maintain insulin sensitivity and positive nitrogen balance with the right diet and protein snacks.
- Build a healthy whole-food diet ('3 + 1') and personalize it using the caloric calculator and meal-plan templates.
- The payoff
- Break through the plateau phenomenon and achieve greater gains in lean muscle mass, strength, and power. · Faster recovery, less muscle soreness and damage, and lower body fat—without changing total caloric intake. · A stronger immune system and reduced susceptibility to colds and infection during intense training.