Here are all the results with descriptions
6 Hours
You're an older adult, which means your body naturally needs less sleep. As you age, you just naturally require less rest. It's crazy! But it's explained: when you're young, your brain is still developing, so you need more rest. You're an adult, so you're done with that!
7 Hours
You're an adult, which means you need less sleep to function than a teen does. Your brain is done developing, so you don't need as much rest. Science! Seven hours is still pretty close to 8 though, so don't feel like you're missing out too much.
8 Hours
You are a teenager, or a young adult, probably very early 20's. That means you need about 8 hours, the standard time recommended. This is because your brain is still in its developmental years, which means it benefits from a good night's rest!
9 Hours
You are a rare exception. Most recommended sleep times never go past 8 hours a night, but you are one of those people who is perpetually tired. Apart from eating a better diet, taking it easy on caffeine, and aiming for an earlier sleep time, it's also beneficial to aim for 9 hours of sleep for you!