What is the point of sleep?

I've definitely had times where I have thought I would be much more productive with my life and have the opportunity to do more things with my time if I didn't need to sleep. I used to love the idea of not needing to sleep just so I could 'get more done' and therefore, somehow be more successful in life. As I've grown older, I really enjoy sleep! Whether you like it or not, sleep is integral to our wellbeing on so many levels - it supports muscle reparation, consolidation of neural pathways, strengthening of concentration and memory, emotional regulation, problem solving skills, and hormonal balance whilst keeping illnesses at bay. That my friends, is why you should be getting an early night on a Friday (haha).