>>1564867 to 8 hours of sleep is one of the bare minimum things you need to function. This means your life will be miserable if you consistently fail to meet this requirement, but just because you've slept enough, doesn't mean your life goes on "easy mode" or some other "superpowers" which reddit for example, might have told you about. put simply, a well-rested body and mind is capable of working hard, and working hard is up to you.
It's also not just the duration. You also need to keep your sleep and wake time consistent, or you'll just end up sleepy all day because your brain is confused.