More Vroom Vroom!

The fitter you are, the faster you’ll sweat. Seems like it’d be the opposite, but: “When you sweat early into your workout, it means you’re able to regulate your temperature before it gets too high, which requires less energy,” says Lawrence Armstrong, Ph.D., director of the Human Performance Laboratory at the University of Connecticut in Storrs. If you imagine your energy supply as a gas tank, saving energy on thermoregulation means you’ll have more vroom-vroom to power your actual workout.
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