Watch Crash Course Biology Season 2 Episode 25 Online
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- COUNTRIES: United States of America
- Subtitles: English
Even though it might seem like our bodies are on autopilot, there is a whole lot happening inside us to keep things moving. In this episode of Crash Course Biology, we’ll learn that our cells are in constant communication, reminding each other—and themselves—to perform important functions like breathing, walking, or even sleeping.
