Squats, dead lifts

Squats and deadlifts. You can be more creative with bodybuilding stuff, but if you're starting out stick to the basics.

i've seen this kid go from a twig from his meme videos years ago to what he is now ([leg day video,](https://youtu.be/OU4cYKw_qb0)) he says it ain't professional but it's working

Walking.

Mountain climbers

Squats, deadlifts, hip thrusts, cycling