The world's most powerful man is at heart just a normal person like the rest of us. Here he was secretly filmed doing a high-rep, low-weight workout in the Marriot hotel in Warsaw in Poland. Read more on how you can up your fitness too.
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When sedentary older adults got into an exercise routine, it curbed their risk of suffering a disabling injury or illness and helped them recover if anything did happen to them.
A Harvard study showed no evidence to support the idea that exercise lowers the risk of multiple sclerosis.