The self control it takes to throw yourself off a 20m high drop is incredible. I've done rappelling (aka abseiling) from that height, on an open wall where I was hanging free. Even knowing all the safety equipment was perfect it took a lot of self control to overcome my brain telling me to not do it.<br><br>Believe it or not skydiving was actually easier despite the altitude being magnitudes greater. At that height the fall just seemed less real than 20m.,(reply>), As they say, it's not the fall that gets you. It's the sudden stop at the end... And that is what your brain is warning you of as well.,(reply>), @lars göran charming response....<br>Respecting her effort does not disrespect others. Get a grip, mate.,(reply>), Take a look at red Bull rampage. They do comparable sized drops but on bikes,(reply>), I think at the height for skydiving, your brain just doesn't process the danger properly anymore.<br><br>Our brain isn't evolved to process the environment at that kind of height so it doesn't feel the same danger like, for example, a tree top or even mountain top.,(reply>), Oh definitely. I'm terrified of heights, but skydiving was easy. I did quite a few static line jumps and a few freefall while at university. Looking down you just see the earth, there's no frame of reference. And then under canopy is just bliss. But when you're on the edge of something, it is very real. Even 2 metres up I get the heebie jeebies.