
People in their late 30s, 40s, and 50s face increased injury risk during fitness activities due to physiological changes including reduced muscle mass, joint flexibility loss, and slower recovery. Experts recommend strength training with controlled movements, low-impact cardio like walking or cycling, and mobility work. Adequate warm-ups, gradual progression, rest days, and protein intake are essential. Common mistakes include skipping warm-ups, progressing too quickly, and ignoring early warning signs like persistent soreness.