When the calorie intake is too high, whether from tournedos Rossini or cheeseburgers, the excess can be taken care of in any number of ways. Sweeping the floor of the restaurant, for example, will consume 84 calories an hour, and washing the dishes and ironing the table napkins will use up 59 an hour each. Listening to a lecture on physical fitness does not help much (only 13 an hour), but riding a bicycle to the lecture and back will use up 180 to 300 calories an hour, depending on the hills. If you lecture on the subject yourself for an hour (without gestures) it will cost 85 calories. Or one can work at a hobby: violin playing at 46 an hour, bookbinding at 81, carpentry at 180. Swimming burns from 300 (breaststroke) to 700 (crawl). Rowing, running and twisting are the great calorie consumers, burning off around 1,240 calories an hour, and mental work is the least helpful (only 7 or 8), even less helpful than just standing still (20).
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