Sticking with the same daily workout may not be doing your long-term health as much good as you think.
Adults who mixed the widest range of physical activities had a 19 percent lower risk of premature death than those with the narrowest routine, according to a study published in January 2026 in BMJ Medicine.
The gap held even after the researchers accounted for how much people exercised overall. In other words, variety itself, not just total minutes moved, was linked to a longer life.
The analysis drew on more than three decades of follow-up data from 111,467 women and men in two large US cohorts, the Nurses' Health Study and the Health Professionals Follow-Up Study. During that period, 38,847 participants died, including 10,719 from cancer and 9,901 from cardiovascular disease.
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"There may be extra health benefits to engaging in multiple types of physical activity, rather than relying on a single type alone," corresponding author Yang Hu, a research scientist in the Department of Nutrition at Harvard T.H. Chan School of Public Health, said in a summary of the findings.
What counts as variety
The team tracked around a dozen categories of movement: walking, jogging, running, bicycling, lap swimming, rowing or calisthenics, tennis or racquet sports, weightlifting and resistance training, yoga and stretching, moderate outdoor work such as yardwork, heavy outdoor work like digging or chopping, and stair climbing.
Each activity carried its own benefit at the high end of engagement. Frequent walkers had a 17 percent lower risk of premature death, tennis and racquet players 15 percent, weight trainers 13 percent, and stair climbers 10 percent, according to figures reported in a BMJ Group summary of the paper.
Combining several categories, however, added something extra that no single activity delivered on its own.
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What it might look like in a real week
The pattern suggests that switching modes matters. A daily runner might add two weekly strength sessions and some weekend gardening. A cyclist might layer in a lap swim and a yoga class. A dedicated walker might add stair intervals and a short circuit of resistance moves.
That fits current public health advice, which already recommends a mix of aerobic work, muscle strengthening and flexibility. The new finding is that hitting several of those categories, rather than logging the same minutes in one lane, appears to track with lower long-term risk.
How much to read into it
The study is observational, meaning it can show associations but not prove that switching up your workouts directly extends life. Exercise was also self-reported, which introduces error, and the two cohorts were mostly white health professionals, which limits how far the numbers generalize.
"This large-scale longitudinal study adds to what we know about the impact of physical activity on mortality by showing that engagement in a range of different types of physical activity is beneficial for longevity, independently of the total amount of physical activity engaged in," Anna Whittaker, professor of behavioural medicine at the University of Stirling, said in an expert reaction collected by the Science Media Centre.
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Andrew Scott, senior lecturer in clinical exercise physiology at the University of Portsmouth, cautioned in the same round-up that "the reference to extending lifespan is not exactly correct since the study explains an association between varied physical activities rather than causal."
For most people, the practical takeaway is modest and reassuring. Any activity still counts, and the researchers stress that overall activity level remains important.
But if your week already contains one workout on repeat, adding a second and a third type of movement may be a low-effort way to stack the odds in your favor.
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