The hardest calisthenics leg moves, no weights

-- INFO ABOUT SAFETY AND PRACTICALITY -- Before writing “bad for the knees“ or “do barbell squats instead“ etc., note that some of these movements are practical and used by many athletes, while others are impractical for strength/size because the setup is too complex or too much instability, those are a challenge for its own sake. And most of these movements can be reached safely by progressing gradually without working through pain, maybe not by everyone since healthy knees are necessary, but some peo