Would it be challenging to do 3000 pushups this month? I don't think so but I'm going to find out. Today I started busting out pushups randomly throughout the day. I think the hardest part will be remembering to do the pushups daily. I plan on doing 100/day and increasing the daily hit if it becomes easy.
I'm sure somewhere out there someone is doing 3000 pushups/day. That would be impressive.