The menstrual cycle may influence strength and performance in females, with decreased strength during the luteal phase and improved performance during the follicular phase.

“there's been a lot more um information becoming available on um that topic as it relates to um hypertrophy outcomes and strength training and again there's probably four studies um that are you know high quality at the moment that I can think of that um again tend to be kind of on the fence um half of them show that um you know during the second phase the literal phase of your menstrual cycle um when progesterone is high and uh estrogen is low that subjectively uh strength decreases for females during training um and then during the earlier parts of training when progesterone's low um you know people report to feel a lot better with their training their performance is better the strength is improved”