Exercise is good for you, but most people really know very【C1】______about how to exercise properly. So when you try, you can run into trouble. Many people【C2】______that when specific muscles are exercised, the fat in the neighbouring area is'【C3】______up'. Yet the truth is that exercise burns fat【C4】______all over【C5】______. Studies show muscles which are not【C6】______lose their strength very quickly. To regain it needs 48 to 72 hours and exercise every other day will【C7】______a normal level of physical strength. To【C8】______weight you should always 'work up a good sweat' when exercising.【C9】______sweating only【C10】______body temperature to prevent over heating. This is【C11】______water loss.【C12】______You replace the liquid, you【C13】______the weight. Walking is the best and easy-to-do exercise. It helps the circulation of blood【C14】______the body, and has a direct【C15】______on your overall feeling of health. Experience【C16】______that 20 minutes' exercise【C17】______is minimum amount.【C18】______your breathing doesn't return to normal state within minutes after you finish【C19】______, you've done【C20】______. 【C1】