My wife found a CrossFit routine on-line, and while I know very little about the program, I have learned this: if you repeat this innocuous little list of exercises three times over in a short period of time (it takes me twenty minutes to complete) you will get very sweaty, pray to a higher power at least once, and be tired for the rest of the day . . . here is the list . . .
1) 10 jump lunges;
2) 10 burpees (a squat thrust with an included push-up);
3) 10 jump squats;
4) 20 sit ups;
5) 20 mountain climbers;
6) 20 calf raises;
7) 30 Russian twists;
8) 30 jumping jacks;
9) 30 high knees;
10) 1 minute plank.