Verywell Health asked BrainSavers founder Dr. Paul Bendheim about a new study where a year of regular aerobic exercise kept adults’ brains about a year younger on MRI. Here’s his take — and why he’s been saying it for 25 years.

As the world’s top authority on sports medicine, the American College of Sports Medicine (ACSM) sets the global standard for fitness and clinical exercise advice. They have recently published new strength training guidelines that offer clear, proven advice for healthy adults. Updated after 17 years, these guidelines simplify workouts to build muscle and mobility for better brain and body health.