阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。
Diet and way of life are often a problem for teenagers. However, if you eat the right food and exercise (1) (regular), you can feel better, look better and have more energy. So healthy eating along (2) regular exercise is probably the only way to become fit. As a teenager, it is important to give your body the energy (3) needs. For a healthy diet, you should eat mostly rice, bread, vegetables and fruit. You also need to drink a lot of water. (4) (drink) enough water will improve your skin and give you healthy hair.
Exercise is something (5) can help to make you look good, feel good and be healthy. Teenagers should spend at least 30 minutes exercising, five times a week. Walking and riding your bike count, and (6) do school sports. When you exercise, your body produces (7) (chemical) that make you feel peaceful and (8) (relax) and increase your ability to concentrate when you study. A good amount of sleep every night (9) (be) also important for your health. Teenagers need eight to ten hours of sleep each night. (10) (good) in no time at all!