15/15 = you work for seconds, you rest for 15 seconds (repeat) C/PP = clean plus push press AMRAP = as many reps as possible 15/15 clean and push press x 20 minutes using your 5 rep max weight, try to do sets of 2 with that weight for the whole 15/15 x 20 minutes....40 sets of 2 = 80 reps...get it move up in weight.