From Science Daily:
Eat To Live: Eat more, exercise, lose more
By JULIA WATSON
WASHINGTON, June 8 (UPI) -- "Exercising makes me fat" may sound a crazy justification for not keeping fit. But it's not such a rare declaration as you might imagine.
People who exercise often find themselves hungry after a workout, and then they eat more than they would have done had they not exercised. So they believe that workouts make you put on weight.
However, this theory has just been proved incorrect.
A study published in the Journal of Endocrinology by scientists from Britain's Surrey University and Imperial College London has found that even if active people eat larger meals after a fitness regime than people who have not worked out, they burn off more calories exercising than they then consume through food.
Read the rest here.