Yawns, hiccups, prune fingers – we wouldn't be here without them

Prune fingers may once have been vital, according to Dr Smulders's research.
He asked 20 volunteers to move marbles from one hand to another and into a
underwater box. Those with wrinkly fingers were 12 per cent faster than
those without.


His research is supported by pictures that show [...]
Source:
http://www.ezonearticle.com/2013/01/10/yawns-hiccups-prune-fingers-we-wouldnt-be-here-without-them/