We’ve written before at HuffPost UK about how everything from blood pressure to your resting heart rate can change over time. It turns out that standing on one leg seems to be the first fitness marker ...
At 55, 30–40 smooth jumping jacks without stopping—and passing the talk test—signals above-average cardiovascular fitness.
Look, I used to think those “100 jumping jacks = 10 calories” calculators were gospel. Then I started paying attention to real people doing real workouts, and wow – was I wrong. Those generic formulas ...
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