that we've just walked in 12.5 seconds while jumping over stuff. and her career still took more twists and turns after that with injuries, a remarkable return after her pregnancy to win at the world championships and then, taking silver in brazil. and since retiring from competitive sport, she, like the whole park, is looking to the next thing. now, it's still connected to sport, as you'd expect, and it's also connected to women's health — specifically menstruation. periods aren't something that's always openly talked about and discussed even less in relation to exercise, butjessica's new app hopes to help women work out better around their cycle, so shiona mccallum's been to meet her to find out more. training hard in the gym, building strength and getting a sweat on. but what if you're on your period?