How to make your body clock work for you

62,154
0
Published 2022-09-05
In today’s world, we increasingly live our lives late into the night. Whether it's work obligations, socializing, or being glued to a screen, we ignore the sun's rise and fall.

But most of us are unaware that a clock is ticking away inside us.

It uses light to keep time and tells us when to sleep and eat. Should we listen? Or is this biological clock simply a relic from a past time?


In today’s episode, Jonathan speaks to a leading authority to unravel the latest science that reveals that this body clock, or circadian rhythm, has a dramatic impact on our health, weight, and mental wellbeing:

Russell Foster is an Oxford University scientist who has dedicated his life to studying circadian rhythms. He’s a world leader in the field and the author of Lifetime: the new science of the body clock.

If you want to uncover the right foods for your body, head to joinZOE.com/podcast and get 10% off your personalized nutrition program.

Timecodes:
00:00 - Intro
00:09 - Topic introduction
01:16 - Quickfire questions
02:30 - What is the biggest myth about our body clock that drives Russell crazy?
03:22 - What are circadian rhythms?
07:05 - Why do they matter to us?
11:14 - How does your body sync its clock?
15:14 - How does the circadian rhythm influence sleep?
16:35 - What happens if we don’t live alongside our circadian rhythms?
23:17 - What should night workers do?
29:05 - Does your circadian rhythm change when going through menopause?
32:30 -Is there a circadian rhythm for our gut?
36:40 - Will it damage our long-term health to continuously be awake by our small children?
39:09 - Summary
40:12 - Goodbyes
40:36 - Outro

Episode transcripts are available here: joinzoe.com/learn/category/nutrition/podcast

Get Russell’s book here: www.amazon.com/Life-Time-Science-Revolutionize-Hea…

Follow Russell: twitter.com/oxscni

Follow ZOE on Instagram: www.instagram.com/zoe/

This podcast was produced by Fascinate Productions.

All Comments (21)
  • @sophie4636
    What a delightful and eloquent gentleman the Prof is. A highly enjoyable and informative episode ✨️
  • @zeezsleep415
    Very interesting. Russell Foster is so clear, and such a nice man too. As a society, we are woefully ignorant of the effects of light, and timing of food, on our sleep. It seems to me that acting in conflict with our circadian clocks is a major way in which we screw up our sleep. Natural hormone reduction (in menopause) also has a massive effect on our sleep. Sleep hygiene can help, but not always. Anti depressants may be prescribed to address the depression that can ensue but aren't an appropriate remedy: we need our rhythm back.
  • Really informative podcast. I’m so pleased that there’s increasingly more information on the importance of the body clock. But I was surprised the subject of ‘circadian rhythm disorders’ wasn’t really mentioned. As someone with Delayed Sleep Phase Disorder (in my case a chronic 4-5 hour shift in my circadian rhythm) I’m always looking for more information and trying to raise awareness of such conditions. I fought for decades against the label of just being ‘lazy’ because I was effectively cognitively impaired in the morning and unable to sleep until very late at night (3-4am). I eventually became self-employed so that I could better regulate my life in accordance with my delayed sleep-wake phase instead of fighting it to fit into societal norms. But I still have to put up with doubt, or sometimes ridicule, from others who refuse to believe that my condition is even real. Would love to hear more on disorders like this in a future podcast.
  • Your guest spoke sense, we are not all the same, my mother never liked getting up early since she was a girl going to school. In her working life she worked for the post office. The shift she opted to do for longest period of time to her retirement, was the 14:00-22:00 shift. So no early rising she is still alive 93 last month.
  • @susydyson1750
    In am earky bird that Sleeps early despite waking am able to return to sleep . I never take a siesta and I’m 72 now and prefer to go out to lunch and stay home late afternoon.. fascinating talk on our circadian systems
  • @gb2309
    Brilliant podcast. I look forward to hearing more about our circadian rhythm soon, I hope. Thank you Jonathan.
  • @Gonergrat
    Wow, please invite him back. He had vital information to share.
  • @tamar5261
    I worked every kind of shift work for 26 years. I could never sleep more than 4 hours. I was constantly jet lagged. Now I have been day working for 20 years, guess what, I wake up after 4 hours and have terrible trouble getting back to sleep. Winter seems worse
  • This is a really important subject explained with complete clarity.
  • @jennywren8937
    I have always been accustomed to burning the candle at both ends, and always been very active. Stress would always fatigue me, so best avoided. Nap after lunch if possible is a great reviver and lingering in bed would give me headache. Going to bed worrying about 8 hours would probably be counter productive but reading is a good wind down until my eyelids feel heavy.
  • Thank you for all that information and covering the topic so well. I look forward to hearing about medication and our body clock. Slow release drugs in particular.
  • @johnnyw525
    When you’re in hospital you’re woken up every few hours to have your vitals checked!
  • @lord-lala
    The quickfire questions were interesting but I didn't hear them elaborated on. Particularly the idea that looking at screens is harmful and that you shouldn't let teens sleep in. They both seem contrary to what I've read elsewhere so I'd love to hear more.
  • Great podcast, very interesting! I'll be making some changes as a result. Thanks
  • @davidtsw
    This tells me that I need to offset the glucose in the afternoon/evening meals more, so ACV before eating, fiber first, then protein and fats, not too much carbs and not those that are high in glycemic index, and a walk after a meal.
  • @stevegee7593
    2 of my uncles both worked for the press in Fleet Street at nights. Both died from stomach cancer.
  • @sylviemacle7974
    I was really interested to hear about why looking at a screen late at night is not an issue... and you skipped this topic altogether.... eeek... So, YES, we do need a follow-up podcast, please. The rest I was already quite aware of from various other podcasts... but this nugget went 'against the flow of thinking' so to speak... hence I was extra interested in that topic.
  • Entrancing presentation…. I would love to hear more from you both.