If you feel strong and full of va-va-voom at certain times of the month but drained at others, your menstrual cycle could be at play.
Changing oestrogen, progesterone and testosterone levels can impact your energy, strength and ability to recover from exercise. However, improving your cardiovascular fitness and building lean muscle tissue can help you regulate your hormones.
Take action: work with each phase of your cycle to get the most from your exercise routine. When your period starts, oestrogen levels are at their lowest, and women can experience cramps and fatigue. Just going for a walk can be enough. During the follicular phase - days one to 14 - your energy levels may increase as oestrogen rises.
Exercise may also help to boost "happy" hormones serotonin and dopamine, as well as testosterone and oestrogen. All this may find you feeling more ready to get active, - just take care not to overdo it. In the luteal phase (days 14 to 28), oestrogen and progesterone start to decline, affecting energy and mood, which can impact motivation. Try calming activities such as yoga or Pilates. For women in perimenopause and menopause, exercise might help you manage your blood sugar and moods, and strength training is crucial for healthy bones, which reduces the risk of bone and muscle loss.