India meets performance physiologist Dr. Stacy Sims who offers key advice on how best to tailor your eating and exercise routine to certain points of your cycle whether you have a regular menstrual cycle, are experiencing the menopause or on hormonal contraception. They also discuss data bias in the diet and exercise world.Credit:Presented by: India Rakusen.Producer: Jorja McAndrew.Series Producer: Ellie Sans.Executive producer: Suzy Grant.Original music composed and performed by Rebekah Reid.Sound Design by Charlie Brandon-King.Special thanks to all contributors and audio diarists.A Listen Production for Radio 4 and BBC Sounds.