thoughts on sleeping 8 hours

The concept of an 8-hour sleep is person-specific, and there's no general evidence suggesting that 8 hours is better than 6. Sleep needs may vary depending on multiple factors, including age, health, and personal lifestyle. Dr. Andrew Huberman has mentioned on the Lex Fridman Podcast that while he personally enjoys an 8-hour sleep, he functions well with about 6 hours.

The importance of a regular sleep schedule and the quality of sleep also comes up as crucial components for maintaining overall well-being. Consistent habits and sleeping within 90-minute ultradian cycles can positively impact performance and cognitive function. Waking up at the end of an ultradian cycle, for example, after 6 rather than 7 hours may leave you feeling more refreshed.

Ultimately, finding the right amount of sleep that makes you feel rested and cognitively sharp is what's important, and this can involve trial and error to determine what works best individually.