Bro, you can do pull ups at home. Just go get the pull up bar. Some have to screw, some don't have to. Costs around RM50 from most fitness stores.

I got mine from Kettler for RM50 something, should cost slightly less in other fitness stores. Don't have a picture right now, I already dismantled it and stored it in the store room bro, 'cause I can't leave it attached to the door frame, the contractors wanna install the wardrobe/bed.

Its just a bar that you can extend its length to fit your door frame perfectly, then just extend it slightly more so its jammed there. I think. Can't explain properly, sorry. Hahaha.