That would be easy on a Gym but that is so expensive here in Mexico and i want to make exercises at my house without the need of machines or any other extra stuff.
The only ones i know are:
Lizards:

those are supossed to exercise pectorals and arms with posture variations.
Abdominals:

well, i guess everybody knows this one.. helps the abdomen.
Back:

Well that is for exercise the lower back part.
Those are the only i know, and i would like to know some exercises, anyones, but being especifically, that would help me with the upper back part, shoulders, forearms, and some more for pectorals.
Would someone help me? thanks in advanced















