SciShow

SciShow

Why Do We Yawn? (2014x58)


Date de diffusion: Avr 15, 2014

Why do we yawn? If you think the answer is BOR-ing, then maybe your brain's just overheated. Let Hank explain the new thinking behind why we ... hold on ... *yawn*. Excuse me.

  • Première: Jan 2012
  • Épisodes: 3763
  • Abonnés: 2
  • En cours
  • YouTube
  • Daily