It is very useful to do sports, you will feel much better than before you have never tried it. Though I agree at first it will be difficult, but later it will be easier, if you have already begun, it is necessary to go on further and not to stop, the result will be rather great, you will look good, it won't be necessary for you to buy different medicine either for loosing weight, or for another purpose. You have to prevent from gaining weight at the initial stage, and it is the best way. It is possible to be engaged 5 days a week, if you want to be an athlete, or just 2-3 days if you want to be fit. From personal experience, many people simply ignore it, this is because of their laziness. He will better have a sleep or do something else, but soon this person will face some problems with health. When you grow up, you will know all the personal qualities, and also which ones you need change.
I would tell, day by day the person improves, studies, works, learns something new. The result of sports gives you advantage in immune system, health. Therefore it is possible to spend some hours, for this kind of activity. In order that pleasant feelings decorate you but not remedies from a drugstore. Thanks for attention!