ELI5 Ski Jumping - how do they not get injured when landing?

With such great speeds and a significant vertical drop, how do ski jumpers not sustain injury when landing? What makes one ski jumper better than others? How is a ski jumping course designed? Where is the largest ski jumping hill?   ... We explain like i'm five!     Thank you to the r/explainlikeimfive community as always and in particular the following users whose questions and comments formed the basis of this discussion: jcgk1123, badlawywr, simplequark, clairquilt, chunkykitty & nilfy. To the ELI5 community that has supported us so far, thanks for all your feedback and comments. Send us an e-mail: [email protected]