Not me.  I have only been doing a few other things besides pushups... sometimes I walk.  Sometimes I do weights and/or stretch, yet  I am not in as good of a shape as you seem to be suggesting, so I had to lessen some of the other activities that I had been doing in order to be able to focus on being able to do pushups. 

If I were younger, I could probably do a lot more physical activities, but I cannot.   So I do what I can, and I will maybe be able to add some additional exercises, but surely not guaranteed that I will be able to recover if I end up doing too many exercises, I will get overly worn out or sore and I won't be able to recover sufficiently.   I have to make sure that I have recovery time between my push up sets, and so even though my recovery time seems to going down pretty damned well and so the recovery times seem to be getting better, and my quantity of pushups per set and per day have been going up too..  even though it does not go up every day nor does it go up every set either, because I have some sets that are lower quantities of pushups.

As far as quantity, the most that I have done in any one set so far is 60, and so I have had less than 10 sets in total that have been between 55 and 60 pushups, and I am trying to push those results to higher quantities per set, but many times I cannot do any more than I am able to do, so in current times, I tend to fail mostly between 50 and 60, but I had a set today that I failed at 45.. I just couldn't do any more for that set. It was my third set of the day about 1 hour 45 minutes after a set that I had done 50..