90 Minutes of Weight Training Weekly May Add Years to Your Life

Scientists just made working out a whole lot simpler with news that could add years to your life.

A major new study tracked over 147,000 people for 30 years and found something remarkable. Lifting weights for just 90 to 120 minutes each week lowered the risk of dying from any cause by 13%.

The research, published in the British Journal of Sports Medicine, analyzed three decades of health data from nurses and health professionals. Every two years, participants reported their weekly exercise habits, giving researchers an unprecedented look at how different workouts affect longevity.

The findings go beyond just living longer. That same amount of weekly strength training lowered the risk of dying from heart disease by 19% and from neurological diseases by 27%.

Dr. Yiwen Zhang from Harvard T.H. Chan School of Public Health explains why studying both cardio and strength training matters. "Aerobic activity and resistance training may benefit health through different pathways," she told Medical News Today.

Here's where it gets even better. The lowest death risk occurred when people combined high aerobic activity with 60 to 119 minutes of weekly strength training.

Why does this combo work so well? Cardio improves heart function and respiratory fitness, while resistance training boosts glucose metabolism and builds muscle strength. Together, they create a powerful health shield.

The research team found no extra benefit beyond 120 minutes of strength training per week. That's good news for busy people worried they're not doing enough.

The Bright Side

This study removes the guesswork from building a healthy exercise routine. You don't need hours at the gym or expensive equipment to see real benefits.

Breaking it down, 90 minutes weekly means just two 45-minute sessions or three 30-minute workouts. That could be bodyweight exercises at home, lifting weights, or even pilates.

Dr. Edward Giovannucci, the study's lead researcher, notes that while we've known cardio helps us live longer, understanding resistance training's role has been less clear until now. This research fills that gap with hard data spanning three decades.

The team plans to study how these exercises affect not just lifespan but quality of life, including physical function and independence as we age.

For anyone who's felt overwhelmed by conflicting fitness advice, this research offers a clear, achievable path forward that's backed by 30 years of evidence.