Lesson 28 · about 20 minutes

Messengers in your body

Hormones and neurotransmitters, the one hand of adrenaline, and how caffeine keeps you awake.

You will learn

  • What hormones and neurotransmitters are, and how they fit their receptors
  • How your body builds dopamine and serotonin from amino acids
  • Why your body makes just one hand of adrenaline
  • How caffeine keeps you awake