Can you? yes, i mean it's physically possible but why would pre-workout be called "pre" workout if your taking it after your work out ?

It would just be foolish to do that because the pre workout wouldn't do anything for you. you would just be getting energized after your already done working out there would be no point.

take your pre workout supplement 10 minutes before you work out and take your post workout protein/supplement within thirty minutes after your workout. I recommend taking your post workout A.S.A.P. after your workout.

You should always eating a light and nutritious pre-workout snack before you start your routine. Lance Armstrong has a website that should answer your questions about pre-workout meals: www.livestrong.com/article/58800-preworkout-foods-eat/

Intra workout is using a workout supplement during workout

Pre

Intra

Post

That depends entirely on the contents of your pre-workout supplement. You should always check with your doctor or nutritionist before taking, changing, or combining supplements.

Yes it is but its overpriced.