100 rep challenge

It's been a long time since I posted. One recent thing of interest (perhaps) is that I stumbled across this 100 rep challenge on the Conditioning Research Blog and decided to give it a shot. So, for the past 3 or 4 days (I'd have to check my log, I don't recall) I have been doing 100 reps, usually 50 push ups and 50 prisoner squats and a few pull ups for good measure (like today). This takes about 5 minutes  and fits nicely into the business that is back to school time and this bodyweight routine complements my approximately one hour or walking with the dogs that I do each day.  My knee is much better compared to how it was in June when I initially noted the pain and scaled back my workouts (no LHT/HIT/SS, LHT, HIIT, sprinting or yoga since then, so now for almost 2 months) but I don't want to be stupid and rush back into everything and re-injure it. Interestingly my body mass is right where it was when I cut back. I am not sure if there was any redistribution of muscle and adipose tissue, but my unscientific assessment (looking in the mirror) tells me that if there is any change, it is undetectable to me. At least I can walk up the stairs now without wincing.