Why Eating the Same Calories Every Day Is Sub-Optimal Standard calorie restriction treats every day identically β€” 1,600 calories whether you trained hard or rested. This ignores the significant variation in energy expenditure between days (200–600 calories difference between a training day and a rest day for most people) and the role that training nutrition plays in performance, recovery, and muscle retention. Consider a typical training day: you perform a full-body resistance session burning 300 calories, followed by elevated protein synthesis for 24–48 hours requiring additional energy…