Back squats work your whole body, with many muscles being used at the same time, not just your legs. It builds muscle and strength quickly but proper squat form is important to avoid knee and leg injury.
![Physical instructor back squat technique](https://cd.royalnavy.mod.uk/-/media/rnweb/images/fitness/video-previews/videoposter-backsquat.jpg?h=551&iar=0&w=980&rev=558082c189c248c18c2e949471758213&hash=67B2E96E7E87A160CF3F10CFAA62095C)
- Step 1
- Step 2
![get fit to join royal marines back squat step one](https://cd.royalnavy.mod.uk/-/media/rnweb/images/fitness/steps/marines_backsquat_1.jpg?h=355&iar=0&w=653&rev=4f7d2bd168d241f784bd6986e095f905&hash=3A9F1C3EC605421304B276E183D103B1)
Back squats work your whole body, with many muscles being used at the same time, not just your legs. It builds muscle and strength quickly but proper squat form is important to avoid knee and leg injury.