Losing weight isn\'t rocket science: eat less and move more and it will happen. The link between sex and slimming is also simple: a good hard rogering will burn calories. But do you know how much weight you\'ll burn up, which positions offer the greatest slimming opportunities or where to find a fellow slimmer willing to work with you? Now you can find out. Stuffed with brilliant shagging tips and calorie burning guide for both sexes, there\'s plenty in \'Shag Yourself Slim\' to keep you informed and entertained. Here\'s a sample guide for him: Self-Shagging with a Porn Mag Walking to the newsagent for a porn mag 40 calories Carrying home lots of computer mags to hide the porn mag 50 calories The actual hand shandy 35 calories Total: 125 calories