Your body needs all the movement it can get in order to stay fit. Exercise should be a regular part of your day, like brushing your teeth, eating, and sleeping. It can be in gym class, joining a sports team, or working out on your own.
Becoming more active will mean your body will need more food, but not just any food. You will need energy-laden food that will give you the jump-start you need for the day. Learn which foods are good for you and will even help you out to reach your goal. Eat better and don’t forget to drink more water.
Incorporate more physical exercise into the routine of the day. Regularly challenge yourself to keep your mind hyped up about your goals and thus your body in tune with your enthusiasm. Whether you workout to lose some of those curves or if you are training for endurance - this will help you get there.
Get someone else to get fit with you. It will be much easier to reach your goals when you have someone else to share the experience with. Create a schedule that you can both commit to and keep each other on track and accountable. You could even get a group of people in that 'get fit' schedule.