Could having sex once a week put the spark back in your marriage? Experts say that's the PERFECT amount. So how did three couples cope when we made them try it?

The secret to keeping romance and sexual attraction alive in a marriage is to make love as often as possible. Isn't it? Not so, say scientists. 


New research has found that making love just once a week is the secret. Helen Carroll asked three couples, Collette Moriarty, 35, a full-time mum who lives in North London with husband Michael, 37, (centre), Kimberley Thomas, 35, a full-time mum who lives in Bridlington, East Yorkshire, with husband Martin, 41, (right), and Donna Styring, 39, a part-time waitress who lives in Hampshire, with husband Ian, 43, (left), to have sex once a week for six weeks and keep a diary of the impact it had on their marriage.