
Originally Posted by
maillotpois
You have enough stored glycogen for about an hour's workout and after that, you're right, you need something more. Rule of thumb is your body can only absorb about 250 - 300 calories an hour, so you want to try something in that range (spaced out - not just 300 calories bang! on the hour), with an emphasis on carbohydrates.
Complex, long-chain, sugars are best. Avoid simple sugars. Not only are they calorically dilute, but it is like trying to fuel a fire with newspaper instead of wood - it burns quickly but you have to keep feeding the fire.