This week we find out how long you could survive by just eating your own severed limbs, plus we search for synchrony in menstrual cycles. Like this podcast? Please help us by <a href="https://www.thenakedscientists.com/donate">supporting the Naked Scientists</a>

Do menstrual cycles synchronise?

Each week we set out to solve one of the world's weirdest, wackiest, funniest and funkiest scientific puzzles. And along with the answer there's a brand new question to think about for next time...