This video discusses the optimal duration for focused work based on research on ultradian rhythms. Huberman explains the importance of incorporating 90-minute focus sessions followed by deliberate periods of decompression for improved concentration and overall well-being.
演讲者不鼓励在休息时使用手机，是因为手机会带来大量的感官信息，这会干扰大脑的休息和解压过程。 他认为，在专注工作后，大脑需要时间来“闲置”，而不是继续处理需要高度集中注意力的信息，而手机的使用恰恰会阻止这个过程。 这种“刻意解压”对于保持专注力至关重要，如同运动训练中的休息一样。
The speaker doesn't explicitly state why phone use is discouraged in one single sentence. However, the reasoning is implied throughout the section on "deliberate decompression." Here are some excerpts that support the reason:
"This idea of not looking at your phone as you walk down the hall to the bathroom, certainly not looking at your phone in the bathroom..." This directly advises against phone use in specific situations.
"...try and give yourself some time to deliberately decompress to let your mental states idle, to not be focused on any one thing." This explains the purpose of the break—to allow the mind to rest and not be engaged in concentrated activity, which phone use would contradict.
"And I know this is hard because we're all being drawn in by the incredible rich array of sensory information available on our phones and other devices." This highlights the problem: phones overload the brain with sensory input, preventing it from truly resting.
"Our ability to focus is not just related to what happens during the entry and movement through those focus bouts, but after those focus bouts. We really need to deliberately decompress." This emphasizes that the post-focus break is just as important as the focus itself, and phone use interferes with that decompression.
In short, the reason is implicit: phone use during breaks introduces too much sensory stimulation and mental engagement, preventing the necessary mental idling and restoration for optimal focus.
