i do one set to failure of push up and chin up, is this good and make me strong and muscular?

It's a start however, these are not very intense exercises and you are only using body weight as resistance....Show more

Well you coud get more definition. But weight lifting will get you the most muscles. I used to do 300 push ups a day in 8th grade. I will tell you this: nothing changed. I dont know about chin uos though....Show more

It doesn't hurt, but you aren't going to get strong and muscular.

If you want to get strong and muscular you have to lift free weights. Period....Show more