After I workout, I take two scoops of whey protein with water. When should I eat afterwards? Is 45 minutes okay? I just want to make sure my body is not trying to absorb the whey protein and the whole food protein I am eating too. (at the same time)
agree with the other reply, you can just eat as soon as you are hungry.
also re: "why not just eat food?", it's mostly a matter of convenience. Especially immediately after training, you can slam down a nice cold shake easily enough, but it might take a little while before you feel like sitting down to a meal.
Whey is a whole food anyway so using it (or other protein supplements) is nothing to be concerned about in my opinion.
It is very true that the body absorbs nutrients more efficiently within the first 45 minutes of training. But taking protein anytime throughout the day is quite alright. There is no specific time that is absolutely necessary, but consuming it within that window will maximize absorbtion.