# there may never be a universal design for women's research > As every woman’s menstrual cycle is different and can change across the lifespan, there might never be a universal blueprint that research studies and practitioners can exclusively use to direct training and performance; however, if we understand and appreciate how ovarian hormones affect different physiological systems, we can use this knowledge to tailor exercise programmes for women in response to the reproductive events throughout their lifespan.[[(Elliott-Sale et al., 2021)#^xmcye]]