大约多长啊?不知道你是小学作文还是中学作文还是怎么地,所以我就写个中难度吧!
Exercising is important in our life,everyone needs atleast 2 hours per week to maintain our good health.I'm going to tell you several benefits of exercising.First of all,it controls your weight,you will use the excess fat or energy you obtained from food and when you're over weight,many bad things happen including diseases.Secondly,exercising can make you have better moods.Now,you might ask:What does exercising have anything to do with my mood?Think again.When you exercise,your brain releases chemicals that can make you feel better.If you have depression,better start exercising!Finally,exercising can deliver more oxygen and nutrients to your cells and tissues which could make you feel like you have more energy.When the sun goes down and you're ready to sleep,you'll have a better quality sleep.
Anyways,exercising helps your body a lot,so,be sure to exercise frequently to promote your health and have fun doing it!