Would you cryopreserve your head?
10 June 2013 Last updated at 11:02 BST
A group of Oxford dons are spending roughly the same amount per month as a gym membership to be cryo-preserved after they die - or frozen in liquid nitrogen at -196C.
The hope is that in a few hundred years, technology will be developed enough to revive them.
Anders Sandberg told the Today programme's Evan Davis that that he is one of the academics planning to have his head frozen.
First broadcast on BBC Radio 4's Today programme on Monday 10 June 2013.