text: weight loss help!? i would be happy to lose 10-15 pounds.  i'm not sure how i put on the weight.  two years ago i switch from regular pop to diet, caffiene free, sugar free pop and added 30-40 minutes of exercise a day and lost 20 pounds.  i haven't really changed these habits but yet i have gained the weight back.  help!  what should i do? you have probably gained some muscle. dont worry to much just change some of yr eating habits again and some of yr exercises to get you going. read tips on weight loss and exercise programs to get you started again on this site