Squats

Exercise Name: Squats

Muscle Group: Erector Spinae, Gluteus Maximus (glutes), (Quads (Quadriceps femoris), Rectus femoris, Vastus intermedius (Cruraeus), Vastus lateralis (Vastus externus), Vastus medialis (vastus internus)), Hamstrings (the three posterior thigh muscles - semitendinosus, semimembranosus and the biceps femoris – also including the tendons that make up the borders of the space behind the knee).


Video/Image: 

Description: The squat is a fundamental strength-training exercise that works several muscle groups in your lower body. This multi-joint, functional movement translates directly to real-life actions, such as picking up a box from the floor. The squat has dozens of variations, although all the versions have the same basic movement pattern. Proper squatting form is important to reduce risk of injury.

Read more: http://www.livestrong.com/article/496242-a-description-of-squatting-exercises/#ixzz2CIW3Mw2r

Source: 
- http://ultrafitnesstraining.com/?page_id=797
- http://www.livestrong.com/article/496242-a-description-of-squatting-exercises/#ixzz2CIW3Mw2r
- http://www.youtube.com/watch?v=QKKZ9AGYTi4