@JeremyECrawford Does using a Reaction use up your next Action in combat? like a Monk deflecting an arrow.

— Michael Ruch (@frgadventures) January 25, 2016

Using a reaction expends your reaction. It doesn't expend the action on your turn. #DnD https://t.co/PeW5CidHYB

— Jeremy Crawford (@JeremyECrawford) January 25, 2016