Your fitness goals shouldn’t stay the same forever. The Build, Maintain, Defend framework explains how the job of fitness changes across life, from building strength, muscle, bone, and movement early to protecting physical capacity through midlife and defending strength, mobility, and independence as you grow older.

Creatine isn’t just for bodybuilders. New 2026 research in adults ages 45 to 65 raises new questions about strength, lean mass, muscular endurance, body composition, and cognition, including possible benefits without structured exercise. Coach Stephan breaks down what the research actually shows, what remains uncertain, and how creatine fits into a smart strength and longevity plan.