I am going to start the push up Challenge next week. I will have to start slow and it will take me a long time because I am coming back from a frozen shoulder that has atrophied muscles. But I have the OK from my physio to do wall push ups so I will work toward 100 of them and then on to knee push ups and then on to full ones. I am hoping by Feb 2016 I will be on the full push-ups.
Slow and steady is the way forward for me, I know it's not a race and I'm doing it for me.
Good luck everyone.