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Your fitness questions, explained.

Explore training, food, recovery and more. See what the research supports, where it falls short, and what you can take from it.

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Latest answers

How long should you rest between sets?

Last verified 12 Sept 2026

Rest until the next set is genuinely hard again: about 2 to 3 minutes on big compound lifts, longer if you are chasing a one rep max, and 1 to 2 minutes on isolation work. Longer rest builds more strength and lets you do more total work. Short rest is not a fat loss or toning tool.

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Is a foam roller worth it?

Last verified 12 Sept 2026

Yes, as a cheap warm up aid, less so for recovery. A pooled analysis found rolling gives a small short term boost to flexibility and sprint readiness before training, and a small drop in muscle pain after, so real but minor effects. It is cheap and lasts, so the bar to justify one is low.

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Are barefoot shoes worth it?

Last verified 12 Sept 2026

Barefoot shoes are an option, not an essential upgrade. Some running studies found benefits, but they do not establish a safer stride or a transition timetable that works for everyone.

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Are eggs bad for your cholesterol?

Last verified 12 Sept 2026

For most healthy people, no. Up to about one egg a day is not linked to higher heart disease or stroke risk in large studies. Eggs nudge blood LDL up a little, but the net effect is small. The bigger issue is what you eat with them, a fry up is not 'an egg'.

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