I joined the gym about 3 weeks ago, I have been doing nothing else to lose weight not eating different and still smoking but that all is about to change!!!! I spend 1 hour at the gym and from the equipment I am burning around 400 cal! I go 3-5 times a week. Well I have put on 4 kg ......I am so confused I am starting a calorie counting diet that is why I joined fitday today, but why would I gain so much weight in so little time, I know I have to diet too but I honestly haven't changed my eating and I have hovered over my weight I am now for months. Why the big change and gaining it is such a downer I feel like quiting!