Posted by Runshouse21 at nytgate1.nytimes.com on March 10, 2004 at 11:27:09:
In Reply to: Processing what you eat produces energy... posted by Azrel1013 on March 10, 2004 at 11:18:53:
The majority of your body heat and your energy comes from breathing.
Thats why you are tired after you eat because it takes more energy to digest the food than the food actually gives you. Eating gives your body the materials it needs not the fuel.