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Duringyourteenageyears,itisimportanttogiveyourbodytheenergythatitneeds.Ifyouskipmeals,youdon’tgetenoughcaloriesthatyourbodyneed,andthenyoufeeltired.Bytheway,“calories”isjustanotherwordwhichisusedtomeanenergy.Teenagegirlsneedabout2200caloriesadayandboysneedabitmore---doctorssuggest2800forteenageboys.50^%ofyourcaloriesshouldcomefromrice,bread,vegetablesandfruittheyeat.Youalsoneedtodrinkalotofwater,6to8glassesaday.Waterhelpskeepyoursystemclean.Drinkingenoughwaterwillimproveyourskinandgiveyouhealthyhair.Exerciseissomethingthatcanhelptomakeyoulookgoodandbehealthy.Expertssuggestthatteenagersspendatleast30minutesexercises,fivetimesaweek.Thatiseasytodo!Walkingandridingyourbikecount,andsodoschoolsports.Manyteenagersaresurprisedtolearnthatwhenyouexercise,yourbodyproducesomechemicalsthatmakeyoufeelrelaxedandincreaseyourabilitytoconcentratewhenyoustudy.Thesechemicalscanevenhelpyousleepbetteratnight.