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The Independent UK
The Independent UK
Health
Julia Musto

Want to live longer? This tennis ball trick could be a longevity ‘grand slam’

Have a tennis ball in your garage? It may unlock clues into your lifespan.

A quick test of strength with a tennis ball may be able to tell you if you’re going to live to 100 years old. Well, grip strength is the amount of force with which a person can squeeze their hand. By around the age of 50, it tends to decline, due to the natural loss of muscle mass.

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