Fitness in Your Genes: Why DNA Matters More Than Willpower
DNA influences how we digest food, metabolize caffeine, gain weight, and respond to exercise. Genes like FTO, CYP1A2, and ACTN3 determine appetite, energy, and endurance, while epigenetics shows lifestyle can modify genetic effects. Personalized medicine and CRISPR allow tailored treatments, proving genes guide, but don’t dictate, our health and fitness outcomes.