Sarah Hedley is one of the UK's leading authorities on sex and well-being. She was one of the founding editors of SCARLET, a magazine tackling sex and relationship issues, and has regularly contributed to a number of titles including COSMOPOLITAN, COMPANY, the SUN, MEN'S FITNESS and FHM.
Sex by Numbers is packed with fascinating facts and lists which answer every question you have about sex. From the most potent sexual positions and best ever oral techniques to the top ten classic parody porn titles, this light-hearted but essential guide includes everything you...
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