How does the menstrual cycle work?
An average menstrual cycle lasts about 28 days, although cycles between 21 and 35 days are also normal. Throughout the cycle, the concentrations of various hormones, particularly estrogen and progesterone, change.
The cycle roughly consists of four phases:
- Menstrual phase
- Follicular phase
- Ovulation
- Luteal phase
Each phase has its own characteristics and can influence how your body responds to exercise.
Phase 1: Menstruation
Menstruation marks the beginning of a new cycle. During this phase, both estrogen and progesterone are relatively low.
Some women experience symptoms such as:
- Fatigue
- Abdominal cramps
- Headaches
- Lower energy levels
Others notice little difference and can exercise as usual.
Exercising during your period
There is no medical reason not to exercise during your period, provided you feel well. In fact, exercise can help some women reduce menstrual symptoms.
Most importantly, listen to your body. If an intensive workout doesn't feel good, opt for a gentle run, walk, or recovery workout instead.
Phase 2: Follicular phase
After menstruation, the follicular phase begins. Estrogen levels gradually rise while progesterone remains low.
Many women notice during this period:
- More energy
- Improved recovery capacity
- More motivation to exercise
- A positive feeling during physical exertion
Exercising in the follicular phase
For many athletes, this feels like the period when workouts are relatively easy. Intensive intervals, strength training, or longer endurance training are often well tolerated.
Research shows that some women may respond better to strength stimuli in this phase than in other parts of the cycle.
Phase 3: Ovulation
Ovulation occurs around the middle of the cycle. Estrogen reaches a peak during this time.
Many women feel energetic and strong during this period.
Possible characteristics include:
- More explosiveness
- More self-confidence
- High energy levels
However, not everyone notices a clear difference.
Injury risk around ovulation
Some studies suggest that increased hormone levels can affect the stability of tendons and joints. This could temporarily increase the risk of certain injuries.
The evidence for this is not yet entirely conclusive, but it does emphasize the importance of a good warm-up and sufficient attention to technique.