Tiny weekly workouts, big gains: strength training for every age, says expert

Dr. Brad Schoenfeld, a leading muscle-growth expert, says you can start seeing meaningful health and strength gains with just two 20–30 minute strength sessions per week. Focus on consistency (two non-consecutive days), progressively challenging technique (end-of-set reps should be hard), and full-body workouts that target major muscle groups. You don’t need heavy lifting—moderate to lighter loads work as long as you push the last reps. With proper recovery, nutrition, and time, these small, regular sessions can improve strength, heart health, mobility, and reduce chronic disease risk, and it’s never too late to start—even into your 90s. Evidence includes older adults (75+) showing benefits and a 1990 study where frail seniors gained function with resistance training.