Squat is the king of exercises. It works the largest muscles in the body, Glutesus Maximus and the Quadriceps and engages most of the muscles in the legs. There are different squat variations: basic squat, front squat, overhead squat, split squat, single leg squat, etc? You can use dumbbells, barbell, kettlebell or just your body weight. You won?t get bored doing this exercise.I have worked in the gyms for years and the main topics about squat are Knee and Back. Most of the time you hear ? do not pass 90 degrees because is bad for your knees? or ? don?t do full depth squat because you increase compressive forces on your menisci and on the patellofemoral joint (joint between your knee cap and your femur)?, or keep the curve in your lower back when you squat otherwise you will have low back pain.
I want to show you what the literature says ( I want to present an evidence-based perspective on this topic ? Timothy Rowland, physio network).