Slack lining is one of those modern sporty pastimes I have seen being performed in parks a lot recently. It's curious and obviously must be good for exercise, balance and body conditioning but I have never understood how you actually do it. Let alone, what happens if you fall off when the elastic rope is just tight enough to rob your of any offspring should you land the wrong way. Chatting to Nico was enlightening and watching him bouncing up and down, turning around and maintaining his balance was really impressive for somebody who has only been doing it as a hobby. I can't say I would feel comfortable giving it a go yet but at least I have a greater appreciation of the skill. Maybe I can get my son to try it out...