Training

Strength training biochemistry

Energy, energy systems, and hormones in strength training.

Energy sources
ATP as the body’s energy currency, how carbs, fats, and proteins contribute, and why all fuels are used at the same time.
Energy systems
Energy systems (phosphagen, anaerobic glycolysis, aerobic): what they do, when each dominates, and how intensity and duration shift the balance.
Energy expenditure
TDEE and its components (BMR, TEF, EAT, NEAT), what affects exercise calorie burn, fuel use during activity, and what matters for weight change.
Hormonal environment of training
How key hormones relate to training, recovery, appetite, and energy balance—without turning physiology into “one hormone explains everything”.