It seems that these days fitness and the gym have become popular again (at least, in my part of the world), so naturally, some of my friends and acquaintances started going to the gym and motivating me to join them. Thing is, I have this slight heart issue - tachycardia caused by a piece of muscle growing the wrong way or something - so I'm not allowed to lift weights. That is to say, I don't like the gym very much either - when I see the people there, I get the picture of 1) low self-esteemed people who want everyone to like them, so they do what's hip, and 2) douches who have all the money. Now I don't really care about either group, but I know for a fact that I do need to buff-up a bit - without lifting weights.
Can anyone suggest anything to me?
What's a good pushup\ pull-up\ whatever routine for getting some visible muscles that actually work?