hello i'm 20 years old and i'm trying to lose body fat. i've been hitting the gym every day and doing 60 minutes of moderate workout with my pulse at around 180 and also strength training. my workout consists of walking for 15 minutes at 4.5 mph on the treadmill, then getting on the exercise bike for naother 15 min at a high setting and keeping it going at about 23-30 mph, then i get back on the treadmill for another 15 min, then back on the exercise bike, and i throw in weight training inbetween on some days. it's been about 3 weeks and i haven't seen any changes. i've been watching what i eat as well, i've been getting around 1500-1600 calories a day of lowfat foods like rice, veggies, fruit, and lean chicken/fish. i have not seen much if not any results and it's starting to frustrate me, is there something i'm missing with this diet thing? currently i'm 140 pounds and 5'10, i'm pretty sure my body fat percentage is around 16-19%.