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This simple tennis ball test can tell how well you’re aging — and predict if you’ll live to 100
Grip strength measures the force you exert with your hands when holding or squeezing an object. Weaker grip strength is often ...
Health Digest on MSN10mon
The Tennis Ball Exercise That Can Check Your Grip Strength (And Your Longevity)
You might not be able to squeeze a tennis ball that hard, but it shows something about your grip strength. Consider how hard ...