By Gretchen Reynolds — 2021
Two studies suggest the sweet spot for longevity lies around 7,000 to 8,000 daily steps or about 30 to 45 minutes of exercise most days.
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CLEAR ALL
Telomeres ordinarily shrink by 1% annually, from birth to death. The telomeres of people with unhealthy habits have much faster shrinkage, while those of people with the best habits and genes shrink at a slower rate, thus enabling such people to live to approximately 100 years.