6-8hrs, more like 8+ more recently as I am doing a lot of physical work away from the PC in the open air. Also, I drink valerian root tea practically every eve

6-8hrs, more like 8+ more recently as I am doing a lot of physical work away from the PC in the open air. Also, I drink valerian root tea practically every evening around 1800, and that definitely helps get me off to sleep and keep me that way.