Dr. Angelo Tremblay and researchers out of Quebec did a fascinating study. They took 15 University students and randomized them into two groups. One group sat and rested for 45 minutes. The other group had to read a document and write a 450 word summary of it. They were then all led to an all-you-can-eat buffet.
Guess what, the people who spent time thinking ate considerably more than those who rested.
Are you still reading? For heaven's sake stop already, you're going to get hungry!