A certified trainer shares what your push-up rep count reveals about your upper-body strength after 55 and how to improve it.
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Whether you're an early bird, a night owl or a functions-best-at-midday kind of person very much has to do with slight variations in your body's internal clock. But if you're unclear on what time it ...
A certified trainer shares how many push-ups signal elite upper-body strength after 50 and what your rep count actually means ...