Are you in shape?

I haven't had proper exercise for nearly a year (no mandatory PE class), so I guess sedentary.

Push ups are painful...

I must agree. I dislike doing push-ups the most out of all of the exercises I've done. I do enjoy crunches and sit-ups, but push-ups are annoying. I'm not talking about those ones that you shake your arms a couple of times and call that a "push-up", that's done incorrectly as well. I usually do my push-ups at a really slow and even pace, trying to gain balance and posture.

Kudos for doing push-ups though.