Part I:
50-40-30-20-10
Double Under
Sit up
Part II:
Back Squat
5-5-5-5-5
In this workout you will perform 5 sets of your 5 rep max weight.  This is how a back squat is performed, no other way than this.  If it is not performed like this it is not an acceptable back squat and therefore does not count.
Congrats to Howie, Adam L. [...]