When is the best time to eat a big meal when weight training - before or after the workout? Also how much time before or after is optional / beneficial?
before most definatedly, when you don't eat u can't lift heavy
when you eat to soon you'll probably feel bloated and not strong enough due to the increased energy it takes to process the food.
for me an hour before is the magic timing, and I also recommend eating fat meals because it gives energy for a longer time