Challenge yourself!

Today an associate of mine said to me ' I bet you cant do 1000 press ups in a day", after consulting another associate who thought I couldn't do it and said 'It'd be impossible for you to do it', me being a healthy person and an extremely keen athlete decided to take them up on the challenge! Within 2 hours of the start time with a friend keeping count, to the amazement of my friends, I had already amassed 500!! What this goes to show is that you shouldn't underestimate yourself, to be honest when I started I wasn't sure I would be able to do it, and in hindsight it was relatively easy, yes there was quite a bit of pain involved, and now my arms feel like jelly, but I succeeded. What I'm trying to convey is that you should challenge yourself, push yourself to the limit, you may just amaze yourself with the things you can do!