What the Research Says
The headline-making claim comes from a comprehensive 2026 meta-analysis published in Nature Human Behaviour, which reviewed 71 trials involving over 22,000 people. Researchers compared group and individual exercise across several categories, including
how much people moved, physical function like strength, and psychosocial wellbeing. The results showed that while group exercise had a small advantage in activity levels and mental wellbeing, the difference was not statistically significant. For purely functional outcomes—like building strength, flexibility, or aerobic capacity—the analysis found no meaningful difference at all. This challenges older assumptions that one format was dramatically superior, suggesting that as long as you have a quality program and stick to it, you can get physically fitter whether you're in a class or on your own.
The Undeniable Power of the Pack
While the physical gains might be similar, the social and psychological benefits of group exercise are well-documented. A 2017 study in The Journal of the American Osteopathic Association found that people who worked out in a group saw a 26% reduction in perceived stress and significant boosts in mental, physical, and emotional quality of life. Solo exercisers in the same study did not experience similar stress reduction. The reasons are intuitive: accountability, connection, and shared motivation. Knowing a group is waiting for you makes you more likely to show up. This sense of belonging and mutual encouragement can turn exercise from a chore into a rewarding social activity, which is a powerful driver for long-term consistency.
The Freedom of Flying Solo
On the other hand, individual exercise offers a different but equally valuable set of advantages. The primary benefit is unparalleled flexibility. You aren't tied to a class schedule, an instructor's pace, or a specific type of workout. This autonomy allows you to tailor your fitness routine perfectly to your body, your goals, and your daily life. If you need to squeeze in a workout at 5 a.m. or prefer a more meditative, focused session without social distraction, solo is the way to go. Researchers suggest the gap between group and solo results has narrowed partly because individual exercise has evolved. With modern apps, wearable technology, and virtual coaching, it's easier than ever to follow a structured, effective program on your own.
How to Choose What's Right for You
Ultimately, this new research empowers you to stop worrying about which type of exercise is 'best' and instead focus on what is best for you. The most effective workout is the one you enjoy enough to do consistently. To find your fit, ask yourself a few key questions. Are you motivated by social energy and accountability, or do you find it distracting? Does your schedule require flexibility, or do you thrive on a fixed routine? Are you seeking stress relief and community, or are you focused on a highly specific physical goal? Beginners may find that a group setting provides crucial structure and guidance, while experienced exercisers might prefer the freedom to push their own limits. There's no wrong answer, and you can always mix and match.
