Quadriceps, Glutes
Calves, Hamstrings, Lower Back, Core
Watch Tutorial
https://www.youtube.com/shorts/2NRHYu_3mwA
https://www.youtube.com/shorts/QkjeSZWEKCk
https://www.youtube.com/shorts/676H3w_4V4U
https://www.youtube.com/shorts/BX-agePghJc
Barbell on back (light weight).
Feet shoulder-width.
Squat partially.
Jump vertically explosively.
Land softly into squat.
Repeat.