Eating healthy like veggies, fruits, whole grain pastas and breads and switching high-calorie sodas for healthy water, smoothies, or swtching whole milk to skim or soy milk. For excersizing, you can do basic excersizes such as jump roping, walking, jogging, crunches, push ups, etc. or simply do 20-30 minutes on a treadmile while playing songs on your mp3.