More than a sign of sleepiness, yawning may cool the brain
- Mon 19 Sep 2011 09:13:PM
A new study is the first involving humans to show that yawning frequency varies with the season, a disparity indicating that yawning could serve as a method for regulating brain temperature.
Source: More than a sign of sleepiness, yawning may cool the brain
Source: More than a sign of sleepiness, yawning may cool the brain