January is the month of the year when motivation to work out is at an all-time high. You’ve thrown out the holiday treats and are ready to get back on track with your health goals. For many, this ...

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Heimlich is a contributor for TIME. Heimlich is a contributor for TIME. I love running. I will happily jog for hours (and often do, during marathons). But ask me to perform a push-up, and I might cry.