How will they help me in boxing?
How much should my reps go up a week?
Does it do anything for the biceps?
Is every other day too much?

http://www.baseops.net/basictraining/pushups.html

I read that article, kinda said something like pushups wont make you stronger after you can do so many reps? Is that true? Like not necesarly stronger but more endurance?!

Thanks