The Best Workout To Do At Each Stage Of Your Menstrual Cycle

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WEEK 2

Strength training right now means bigger gains in muscle mass, possibly due to rising testosterone levels. Do some kettlebell squats or crush it at CrossFit, but try to be mindful of your knees. For unclear reasons, surging estrogen levels (which prep the uterus to host the next egg) may lead to more frequent ACL injuries.

Start with some of these strength-training moves: 

WEEK 3

When you ovulate (usually around day 14), your estrogen peaks, causing your body to use fat, which is slower to release energy than carbs, as its primary power source. That metabolic shift will make steady-state workouts easier, so if you’re training for a race, plan your long runs for this week. (Torch fat, get fit, and feel great with Women’s Health’s All in 18 DVD!) 

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WEEK 4

Your lady parts are prepping for the big event with a major hit of progesterone. Cue: crying jags during commercials and bloating (fun!). If you can pull yourself off the couch, do it. Experts say there’s no physiological reason you can’t work out hard right now, but if you’re not up to it, try a brisk walk or Pilates class.