Caffeine and Sleep
Caffeine consumption, even if it seems manageable, can significantly impact the depth of sleep, leading to feelings of unrest despite adequate hours of rest. Cutting off caffeine intake 8 to 10 hours before bedtime is recommended to preserve deep sleep quality. This disruption can create a cycle of dependency on caffeine and other substances to feel awake and alert.In this clip
From this podcast

Huberman Lab
Dr. Matthew Walker: The Science & Practice of Perfecting Your Sleep | Huberman Lab Podcast #31
Related Questions
How much caffeine in one's system by 10 PM is enough to disrupt their sleep according to the episode Dr. Matthew Walker: The Science & Practice of Perfecting Your Sleep | Huberman Lab Podcast #31 and the clip Caffeine and Sleep?
Is Andrew Huberman's recommendation to delay caffeine intake to 60-90 minutes after waking up based on the actual get-out-of-bed time? For example, if someone wakes up at 7, lays around, goes back to sleep, and then gets out of bed at 8, should their caffeine intake be at 9-9:30 or 8-8:30?
Is Andrew's recommendation to delay caffeine intake to 60-90 minutes after waking up, as discussed in the Huberman Lab Podcast episodes "Sleep Toolkit: Tools for Optimizing Sleep & Sleep-Wake Timing | Huberman Lab Podcast #84" and "Optimize & Control Your Brain Chemistry to Improve Health & Performance | Huberman Lab Podcast #80," based on the actual get-out-of-bed time? For example, if someone wakes up at 7, lays around, goes back to sleep, and then gets out of bed at 8, should their caffeine intake be at 9-9:30 or 8-8:30?