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I lay on a table being scanned as part of my much needed physical assessment. A machine uses low-level x-rays to calculate the exact amount of fat, bone and muscle.

The results are not good. For a 33-year-old male, I carry 8 kg of body fat, but my upper body obviously hasn’t seen the inside of a gym in a while. The scan showed that I should plan to get stronger and stronger, and some recent mishaps on the tennis court indicated just how far my aerobic capacity had fallen.

I need to be fixed, that much is clear. But like most people, my work is mostly sedentary and I don’t often have time to exercise. Which got me wondering: What if there were ways to get more out of my workout, and better yet, to hack my workout without moving a muscle. For example, I’ve heard that certain sneakers can help you sleep better or run faster. There has been talk of the “exercise pill” and people who can develop more muscle just by thinking about it. I decided to explore some low-effort ways to get my workout on track, starting with all the basic workout hacks.

For many years, yoga believers support nasal breathing, and researchers now want to know its effect on performance during exercise. The main reason for this is a substance called nitric oxide (NO) in…

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