Why Do We Get Nervous?

What causes those butterflies in your stomach? DAILY EPISODES, answering your burning questions. Watch 5 episodes before anybody else: Use the hashtag #ScienceSays to share your burning Olympic questions! Special thanks to the CBC for supporting this series. SUBSCRIBE! FOLLOW US: Instagram and Twitter: @whalewatchmeplz and @mitchellmoffit Clickable: and Facebook: http://on