Hi!

Thank you Anty for your helpful support!
Just a word to tell I did it and everything was ok! My hair still stand on my head and didn't move an inch!
My "mistake" was to overtouch my hair after the jump to control everything was ok so my friends asked me if I hurt my head because I touched it several times! I just said : "oh no, I was in "shock" so I just touch my head to check everything was ok!" It was a stupid answer, I should answer: "Yes I felt something weird on my neck but everything seems fine!" But my friends seemed to be ok with my explanation.

To conclude : bungee jumping is actually ok with a solid bond! Don't worry and you should'nt overtouch your head to control : no need to control!