As the recommended calorie intake for a man is 2200 odd per day. Just under a hundred per hour. A notice in local swimming pool claims 20 lengths burns 350 in 30 minuets. Does this include the 40 odd for normal living or is it over and above i.e. 350 + 40 = 390 or 350 - 40 = 310 . This is vital information as it involves an extra half Kit-Kat.