PREWORKOUT

OBJECTIVE

the objective here is to promote sustained carbohydrate availability (& to a lesser degree, amino acid availability), minimize muscle catabolism, and spare glygogen as much as possible. this is best accomplished by carbs with a low to moderate GI & insulin index (II). it's important to note here that research is quite conflicting on the issue of GI & exercise performance. much of the latest studies show no real difference. nevertheless, it's established that lower-GI sources influence substrate oxidation during training ever-so-slightly better for bodybuilding purposes. when i mention GI, i'm talking about the glucose comparison standard, not the white bread standard. the actual amount & physical nature of the meal depends on how soon your schedule allows you to eat or drink before training. there are at least 3 acceptable scenarios..

COMPOSITION

scenario one: a solid, full-sized balanced meal finished 60-90 minutes preworkout consisting of 30-60g protein (0.2-0.25g/lb target BW) + 40-80g carb (0.33g/lb target BW). there are endless examples of how this can be constructed, & heres just one:
---- 5-8oz of any type of land or sea animal flesh
---- 1-2 cups low to moderate-GI grain or other starchy vegetable or legume /or/ fistsize sweet potato, etc, look up sub-70-rated examples here.
---- 1 or more cups fibrous vegetable like salad greens, broccoli, cauliflower, asparagus, spinach, kale, cabbage, onions, even carrots, etc, etc

scenario two: a liquid meal or shake finished 15-30min preworkout:
---- 20-50g protein (0.15-0.2g/lb target BW) whey is preferred for its BCAA content
---- 40-80g (0.33g/lb target BW) low-to-moderate GI carbs. any fruit works well here, so does old fashioned oats. a solid case can be built for a combination of both. whether you include water/milk or unsaturated fat like flax or pnb is really personal preference. milk just gets the anabolic/anticatabolic cascade rolling for those in a severe hurry to gain muscle. adding fat to this shake can slow the release of nutrients substantially & benefit those who train for significantly more than 90 min, offering extra protection against energy dips - especially if you don't consume a dilute carb solution during your workout. most people will do fine without the fat as long as the overall carb profile of the shake is relatively low to moderate-GI. NOTE: most commercially prepared dilute sports drink solutions have a low glycemic load, rendering their high GI irrelevant. some dudes use the same shake for pre & post workout; they make a bigass shake, and simply drink half before & half after - or they sip it thoughout the workout. this is fine too & you'll still benefit, but you're not taking full advantage of the specifically different physiologic demands of pre & postworkout for bodybuilding purposes.