Hey guys im working really hard. but now that cardio have increase to lose body fat. im finding it really hard to get butt hard and hamstrings to come out. any advice in exercises that can work?

just want to take this time out to say thanks to everyone for they help.but i have one more question.. how much cardio do u guys think i should be doing a day to lower body fat?? and what are the best machines in the gym for doing so?

ok i do chin ups, rows, lunges, squats,cardio strength training, and weight training. I do need some good leg and glutes exercises cause i find that butt isnt hard enough.also need some good abs exercise i can se some definition but not enough...do u know a good protein powder i can buy to help me w...

first i want to thank who replied and ur advise was great and helped me to understand certain stuff. What i really need right now is to lower body fat and i know im capable of gaining muscle mass so im not that worried. its just lowering body fay is the issue, im not sure if im doing enough cardio.....

HEY IM A VEGETARIAN, AND WANT TO GAIN MUSCLE AND LOSE BODY FAT, IM IN A FITNESS COMPETITION AND HAVE TO GO THROUGH SOME FITNESS TEST AND WEIGH INS BEFORE I GET THROUGH TO THE FINALS WHICH IS JUN 7TH 2009. AT THE LAST WEIGH IN I WAS 141POUNDS AND 26% BODY FAT AND IM 24 YEARS OLD AND 5'5 AND THAT WAS ...