5) I was not thinking that rank would necessarily be a category - because I doubt that there would be any need to compete.. but then maybe the number of days could be the rank rather than the number of pushups.... but yeah, sure there might be some interest in the number of pushups, even though some guys have already stated that they were more interested in quality rather than quality, but we still might want to consider consistency, so the number of days could be a kind of ranking, so if guys are missing days, then they would ONLY report the days that they were doing pushups and not the number of calendar days, because the days might not count if they were to be days in which no pushups were done on those days.
Ranking would definitely cause some level of competitiveness which would deviate us from the main purpose of this challenge which is to help have a healthy daily routine of exercise while we support bitcoin. Some of us might start to feel we are not doing our best when the idea was to do as much as you can and remain consistent at doing it.
The idea of having a table is nice for record keeping, and this could help motivate others to want to be a part of the exercise and to know how much you have been doing so far and it would remove the stress for those that has not been keeping a personal record of how many pushups they have been doing.