Harvard Researchers Say There's a Strength Training 'Sweet Spot' for Longevity

You don't need daily gym sessions to boost your long-term health. According to new research from the Harvard T.H. Chan School of Public Health, about 90 to 120 minutes of strength training each week may be the sweet spot for longevity.

The study, published in the British Journal of Sports Medicine, followed nearly 147,000 adults for up to 30 years and found that people who lifted weights for roughly two hours a week had a 13% lower risk of premature death than those who didn't lift.

The Biggest Longevity Gains Came From a Surprisingly Small Time Commitment

Researchers found that adults who completed 90 to 120 minutes of resistance training each week had a 19% lower risk of dying from cardiovascular disease and a 27% lower risk of dying from neurodegenerative diseases compared with those who did no strength training.

According to the Harvard researchers, the longevity benefits appeared to plateau beyond about two hours of weekly lifting, suggesting that more time in the weight room didn't necessarily translate into a longer life.

"For people who are less active, the key message is that small amounts can still matter. Building a routine gradually may be more important than trying to do a lot at once," senior author Edward Giovannucci, professor of nutrition and epidemiology at Harvard T.H. Chan School of Public Health, said in an interview reported by Everyday Health.

One Habit Made the Results Even Better

The researchers found the greatest reductions in mortality among adults who combined strength training with regular aerobic exercise.

That aligns with the U.S. Department of Health and Human Services Physical Activity Guidelines for Americans, which recommend adults perform muscle-strengthening activities involving all major muscle groups at least twice a week, in addition to getting 150 to 300 minutes of moderate-intensity aerobic activity or 75 to 150 minutes of vigorous activity each week.

What Men Should Do With This Longevity Finding

The biggest takeaway isn't to spend more time in the gym-it's to make strength training a consistent part of your week.

This study suggests that just two or three full-body lifting sessions, combined with regular cardio, can deliver meaningful long-term health benefits. Focus on compound exercises like breathing squats, presses, rows, and deadlifts, aim to train all major muscle groups, and prioritize consistency over volume.

When it comes to living longer, it appears that a couple of hours of quality strength training each week may go a lot further than you think.

Next: Top Trainers Are Quietly Becoming Longevity Coaches, and It's Changing Fitness for Good

This story was originally published by Men's Journal on Jul 8, 2026, where it first appeared in the Health section. Add Men's Journal as a Preferred Source by clicking here.

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This story was originally published July 8, 2026 at 5:42 AM.