I heard it many many times... that you should not pump iron everyday... But I feel good when I do it...
So, I wonder if doing it everyday does actually prevents you from building muscles...
Any thought??

I don't know anything about weights, but I do have a cousin who is a serious weight-lifter. She lifts nearly every day, but she concentrates on different areas each day.

I don't know if it prevents it, but you build muscle when you rest and your muscle repairs itself. You should be fine if you work a different area each day, be careful you don't burn out

I do strength training 3 days a week, full body. (I do cardio, dance, yoga on the days in between.) Other people do strength training every day, but they do a different area per day, and maybe cardio as well that day. Your muscles need time in between workouts to repair and build, so whether or not you should do it depends on what you are working.

I do yoga almost every day and am building serious muscle from that.

Alternate days. Every other day per body part is enough for recovery.

Well... I do body pump... which works the same areas every class.... That is why I am asking... I am working same muscle areas everyday... Does it prevent me from building muscles?

In New Rules of Lifting for Women, the trainer Allwyn Cosgrove wrote that a good workout does not build muscle, RECOVERING from a good workout builds muscle. It's the act of repairing itself that causes it to grow. If you keep tearing it down every day it doesn't have time to repair itself, and may not grow to your expectation.