If you have a spare 20 minutes, I’d suggest you take a watch of this. Matt Walker is the author of the book I listen to which give theories on why sleep is so important – and most of it is in this TED talk:
Last week I was getting on average about 4-6 hours of sleep because something stressful was waking me up. luckily I’m back to normal this week, but I did feel the effect of the sleep deprivation.
As Matt explains, sleep deprivation causes reduced immunity, lack of learning and memories, cancer and cardiovascular issues. So it’s a good idea to try and get your sleep.