Creatine has replaced protein as fitness fanatics’ molecule of the moment (at least that’s what the advertisement screens in my gym tell me). You can consume it as a powder, a gel or even as raspberry-flavoured gummies, apparently. Our Well Informed column explains that the performance-enhancing drug gets results, and to feel them you don’t have to be a champion athlete—or even to exercise at all.

The column has become my guide to health and fitness. One I read recently gives a rigorous answer to a question I’ve often wondered about when choosing between putting on my running shoes or spending another half an hour in bed: how little exercise can I get away with?

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One product truly is anti-ageing