SciShow
Why Do Joints Pop And Crack? (2014x97)
Date de diffusion: Jun 24, 2014
SciShow explains what really causes those popping sounds your joints make -- fluid dynamics, people! -- and what you should watch out for if you're a habitual knuckle-popper.
- Première: Jan 2012
- Épisodes: 3763
- Abonnés: 2