Yeah, we do a ton of that. Our warmups are never really identical twice, but basically stay consistent. One night we went heavy on pushups: We had already done aabout 40 or 60, before we circled up and counted out ten for every student there, which was about 16 students.
For the most part it's about 40 to 80 pushups on average, depending on the other exercises.
Thanks for the info. So I wil continue with the protein shakes then.