If you're hoping to hear the patter of tiny feet, make some noise in the bedroom. Researchers in Japan have found that the steamier the sex, the higher your sperm count. They compared semen from fertile men collected while they masturbated both while watching erotic videos and while not. Sexual satisfaction was 46 per cent higher in the former case than in the latter.

"In the long run, repeated bouts of steamy sex lead to better contraction," says Hyderabad based Dr Sudakar Krishnamurti, andrologist, microsurgeon and director, Andromeda Andrology Center. And this better contraction means that you generate more volume of ejaculate and at the same time draw from younger, healthier sperm. Time to bring out the handcuffs and chocolate
sauce then.