DearJenny,Hownicetohearfromyou!Inyourletteryouaskedmehowtokeephealthy.Iwouldliketogiveyousomeadvice.Asyouknow,foodisveryimportanttousteenagers.Sincewegrowveryfast,weneednutritiousfoodverymuch,thingslikefreshvegetablesandfruits,fishandmeat,andsoon.ButIthinkyou’dbetternoteatfoodwithmuchsugarandfat.Andyoushouldgetplentyofsleep.Itisnecessaryforyoutohaveatleasteighthoursofsleepeveryday.Also,youshouldtakephysicalexerciseregularly.Itwillbegoodforyourhealth.Onlyinthiswaycanyoukeepfit.Bestwishes!YoursLiHua