Whilst the symptoms of menstruation can make exercise feel difficult or effortful, you are not at risk. In fact, exercising can help make your period more manageable, decreasing many unpleasant symptoms. Unless your doctor has advised against it, consider it perfectly safe to exercise. If you struggle with lower back pain, bloating and stomach pain during this time, perhaps avoid strength training of your back and core during the days where it is at its worst. Some yoga practitioners will want you to steer clear of inverted poses during a woman’s period, but others will maintain that there is no harm in these poses. Exercise in general though, is advised.