Quote Originally Posted by mirliluck View Post
I worry you are not eating enough. With 1-2 hours of exercise, you are easily burning in the range of 600-1000 calories.
Says who? If I work super crazy hard (70%+ of max), I can burn about 400 calories in a hour. That's not much. If I just go about my day with no added formal exercise (bearing in mind that I do farm chores twice a day which is more than a lot of people), I burn AT MOST 1700 calories. If I ate 1500 calories a day, I'd be barely creating a deficit unless I did a LOT of working out.

While I agree that there are absolutely many people out there who eat too little to fuel their workouts and end up throwing off their metabolisms...there are just as many of us out there who eat too much. Metabolism is HIGHLY individual. Making assumptions about what every person burns based on calculations in books or online is about as smart as judging bike fit based on stand-over height. It works for some, but certainly not for everyone.