In my book Parkour Strength Training, I go into detail about the differences between the hard and soft landing techniques (AKA depth drop when used as a strength training exercise). Without going into a long explanation, know that depending on the circumstances of a drop (and your training goals), you may want to stay stiffer and taller in order to rebound quickly (hard landing) or you may want to absorb more deeply and silently (soft landing).
Disclaimer: I’m just a data nerd who’s curious to learn more about parkour speed training. There’s a lot I don’t know but I find this measurable movement style to be one of the most innovative, unexplored areas in all of athletics. No other jump/land/sprint type sport has gone as far as parkour has in adapting … Read more