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Old 06-03-2009, 01:23 PM   #15
abinga
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Quote:
Originally Posted by SkinnyPupp View Post
If your body needed that much energy to digest, we would be a pretty inefficient species. The basic idea is right (don't go to the gym stuffed with food) but it's for other reasons (sympathetic system) not "energy to digest". Although in a way, I guess it's correct. Just expected more detailed info from a trainer
I don't have time for detailed answers at 5am

The body routes blood to muscles being used for work. When you are digesting, 65%(if I recall correctly) of your blood is routed primarily to your digestive system. So you are left with 35% blood flow to the rest of the body during this period. This is one of the reasons people feel tired from eating. Digesting will take the length of your workout or longer. You are not going to be as efficient as you are post digestion and you miss out on a lot of nutrients going to your targeted muscles. The digestive system is more detailed than eating and shitting I wish I kept the chart from when I was studying human kinetics to post up.

hope that was a better answer! cheers
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