Russell Foster is a neuroscientist and he does a lot of research into sleep. His engaging TED talk reiterates a lot of what we’ve probably heard our whole lives: that we aren’t getting enough sleep. But we are now starting to understand some of the science behind it. Russell encourages us to stop the cycle of limited sleep and caffeine stimulation in favour of listening to our bodies and honouring the light/dark cycle that our bodies observe to keep us being the best that we can be.