Lewis HowesYour Personal 24/7 Greatness Coach

Is 8 hours of sleep enough?

30 May 2026 · 1 min

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1:09

In this monologue, the speaker challenges the notion that eight hours of sleep is universally optimal. He explains that optimal sleep duration depends on factors such as age, genetics, occupation, and athletic status. Younger adults (early 20s) may need 6.5–7 hours, while developing bodies and athletes may require up to 10 hours, including naps. For most adults, the average recommended range is 7–9 hours, but the speaker personally, at age 58, gets about 6.5 hours without coffee and feels fine. He emphasizes that sleep optimization is not solely about quantity; sleep quality is equally important, and individuals should understand the flexibility of sleep needs rather than rigidly targeting eight hours.

Chapters

Is 8 hours still the optimal for average human beings? Absolutely not. No, no, absolutely not. Should some people be getting less or more depending on their personality, depending on their job, the person, if they're athletes, or— it has a lot to do with genetics and where they are in their physical stage of life, right? So when you're younger, you can get 6.5, 7 hours. When I talk about younger now, I'm talking like early 20s, things like that. When you're much younger, you you want to get as much sleep as you can because you've got a developing body. I mean, you're an athlete, you understood this when you were out playing. Yeah, you got your rest, bro. You need a lot of sleep. You need naps, you need sleep, you need— exactly, 10 hours maybe, right? And so in those cases, you might need more sleep. But once you kind of hit adulthood, the— what we're learning is somewhere between 7 and 9 hours seems to be kind of the general average. I'll be honest with you though, I get about 6 and a half. I'm 58 years old, I get 6 and a half. I've had no coffee today. This is my energy level. Every day, right? So sleep is flexible. That's the thing I want people to really understand. I got so many people out there like, the only way I'm going to optimize is if I get 8 hours. Remember, sleep isn't about quantity, it's also about quality of sleep.