After a hard workout my stomach doesn't tolerate solid food for a few hours. So I'll make a recovery drink with juice, extra water and half a scoop of protein powder. The stuff I use is 80% whey and 20% soy. The whey is absorbed faster than the soy. This way I get the immediate post workout benefit of protein but I also don't get hungry as quickly because of the more slowly absorbed soy. Otherwise, I get my protein from food.