Don’t take my word for it. This is according to probably the world’s leading expert on sleep science.

You’re exposing yourself to much higher chances of cancer, heart disease, and other illnesses not getting enough sleep. You’re diminishing your ability to perform motor functions and cognitive tasks significantly by not getting enough sleep and taking literal years off your life.

Everyone, which he iterates multiple times, needs at least 7 hours but preferably 8 per night. Even the people that say they’re fine on 6 he says are killing themselves by not sleeping longer.