by redgiki on Thu Apr 30, 2009 5:00 pm
Here's a quick overview of the science Andrew is talking about.
Your muscles are less insulin-resistant after a workout. So that means that, on balance, your muscles will absorb a higher percentage of glucose after a high-GI meal than they did prior to that workout. Which means your fat cells absorb relatively less.
The effect IS NOT HUGE. If you shove down a whole large pizza after that workout, of course your muscles are going to go "BURP! I'm full!" pretty quickly, and 7 out of those 8 slices are going straight to your fat cells. But if you were to pick the best time to have a high-GI food, it is at the time when your muscles are most receptive to ingesting glucose: immediately after a workout.
First thing in the morning morning isn't too bad, either, by the way. You've been living on stored fat for at least 8 hours at that point, and skeletal muscle insulin resistance is low at that time, too.
All that said, your body is going to mostly represent the average of your nutritional habits, or the 80% of your efforts. That extra 20% -- timing supplements and meals, eliminating a few off-plan foods, etc. -- just makes the difference between "good" and "great".
Good luck!
Regards,
Matt B.