there are many theories about yawning.some are mentioned here, and then there's the whole 'cools off your brain' theory. they are all likely nonsense.
(
postbear has metal knees,
Sat 21 Jul 2007, 0:22,
archived)
Oi!Stop questioning my science! If your science says otherwise, then your science is fucking wrong!
;)
(;)
Your watch is BACK,
Sat 21 Jul 2007, 0:29,
archived)