A humbling fact is that after the age of 30, adults start to have a gradual loss of muscle mass (also known as sarcopenia) which correlates to some decline in physical performance (Fragala et al., 2019). From this point onwards, we have to continuously work ever-slightly harder just to maintain our current level of fitness. And, after the age of 70, even greater decreases in physiological variables such as muscular…
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