This is pretty well put together! Interesting concept, fun quips, and a cohesive style is already good enough, but the mechanics are balanced together quite well. There are just enough tasks to be engaging, and tying a few of the tasks to each other (breathing/sweating/drinking) was a clever way to make it not feel jumbled. Well done!
(my favorite line when getting 5th place was "you got slightly below average, which is what we strive for in this company!")