In today’s episode, we dive deep into the relationship between circadian rhythms and the sleep-wake cycle with Dr. Renske Lok from Stanford University. Are they different or the same? What other processes in the body regulate your sleep? Can you catch-up on lost sleep? How can you even know if you are sleep-deprived and need more sleep? Tune in to get the answers to these and many other questions on sleep and circadian rhythms.

Links and resources related to the episode’s content

• Graphic of sleep pressure (process S) and circadian rhythms (process C) [https://static.physoc.org/app/uploads/2019/03/22194528/Fig3.jpg]

  
  

• Further reading on the two-process model of sleep [https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9540767/]

  
  

• Disconnect between how sleepy people feel (subjective) and how sleepy they actually are (objective) [https://doi.org/10.2147/NSS.S312808]

  
  

Timestamps

(00:00 ) Intro

(02:08 ) Introducing Dr. Lok

(02:44 ) Circadian rhythms: from morning to night

(06:37 ) Sleep and circadian rhythms: same or different?

(08:10 ) The two-process model of sleep

(09:08 ) The “forbidden” zone

(10:02 ) Travel and jet-lag

(11:35 ) How does sleep pressure work?

(14:28 ) Can you catch-up on lost sleep?

(17:19 ) How to know if you’re sleep-deprived?

(20:03 ) Separating process S and C in the lab

(26:20 ) Outro

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