Secondly, “there is conflicting evidence on whether the different phases of the menstrual cycle truly impact exercise performance”, she said. “This is likely because there are many factors that influence exercise performance, and there is a wide variation between the physical abilities of individual women.
Kino Soh, a personal trainer with UFit, agreed: “Multiple studies suggest that strength is not significantly affected during menstruation. However, common PMS symptoms such as fatigue, back pain, headaches and nausea, coupled with Singapore’s hot and humid climate, may contribute to greater cardiovascular strain and reduced exercise tolerance.
“As a result, some women may feel more breathless than usual, or experience a higher perceived level of exertion during high-intensity activities.”
Moreover, not every woman goes through the distinct phases of a menstrual cycle, said Dr Lim. “The phases only occur in women with regular monthly cycles (that is, 21-to-35-day cycles). Women with irregular cycles or who are on hormonal treatments may not go through the menstrual, follicular, ovulation and luteal phases on a monthly basis.”
SO SHOULD YOU PUSH OR PULL BACK IN THE GYM?
The key is to let your body tell you. “Everyone responds differently, so it really comes down to how the person feels on the day,” said Soh. “If someone is dealing with more severe symptoms like strong pain, dizziness or vomiting, rest is the better option.”