Hi! My friend and I are also going into high school and we also wanted to lose weight and improve our bodies... So that is what we did!!! First, we started walking every morning for about 10 minutes. Then as time goes on we started jogging for about 25 minutes each time. We drank a lot more water and we totally cut out soft drinks and sugary juices. But we still have three meals a day and we have snacks but instead of having chips we eat fruit.And once a week on the weekends we go out to Rita's and get an italian ice. AND REMEBER JOGGING IS 50% MENTAL. and if you stick to eating healthy you can loser upto 15 pounds in a month just like we did.And last but not least. ""BEAUTY IS ON THE INSIDE, NOT THE OUTSIDE"