For a lot of us, exercising during our periods sounds totally unthinkable. But if you're one of those powerful people who can motor through the cramps, and you're looking for a little guidance on the best moves, we've got your number.

Alisa Vitti, is the author of WomanCode, and an expert on these things. She says women need to be sensitive to the neurohormonal changes happening in their bodies while planning their exercise regimens.

Right after your period ends, in the follicular stage (7 to 10 days), you'll have fairly high energy levels. Vitti suggests you try a new cardio routine. "You have more new neural pathways being created during this phase, and they're more easily connected, so you're more likely to stick to a new exercise plan."

In the ovulatory phase (3 to 4 days), right after the follicular stage, you'll be at full energy levels, and can go for an even more intense work out. "This is where we have a sharp rise in hormones, including a dramatic increase in estrogen and a nice surge of testosterone," explains Vitti. So a boot camp wouldn't be out of the question.

In the luetal phase, which lasts for 10 or 12 days, you'll start to slow down a bit. "Your energy may still be high if you're healthy," Vitti says. But as estrogen and progesterone decline, you'll slow down. That's when, suggests Vitti suggests strength training or barre classes. When you reach the menstrual part of your period, you'll want to take it easy, and stick to low intensity workouts like walking or yoga. Trust us, your uterus will thank you. [Well And Good NYC]