
Sign up to save your podcasts
Or


The clocks fall back this Sunday, and your body clock doesn't read the paper. Jared covers why sleep timing may matter as much as hours, what to do about 3 a.m. waking, why the boring basics beat the newest sleep hacks, his own bedroom setup (yes, sweatpants and socks), what Halloween sugar and his anniversary week do to his HRV, caffeine dose and timing, and why Saturday night is his best sleep of the week.
Get the free 7-day plan, Get the Best Sleep of Your Life: https://www.1upyourlife.com/sleep
Read the full newsletter issue: https://www.1upyourlife.com/p/sleep-more-hours-or-better-timing
Every study mentioned in this episode
Daylight saving time transitions and depression, Danish health records, 2017: https://research.regionh.dk/en/publications/daylight-savings-time-transitions-and-the-incidence-rate-of-unipo/
Day and night light exposure and psychiatric disorders, 86,772 adults, 2023: https://doi.org/10.1038/s44220-023-00135-8
Sleep regularity and depression, 79,666 adults with wrist trackers, 2025: https://doi.org/10.1017/S0033291725101281
Sleep regularity vs sleep duration and mortality, 60,977 adults, 2024: https://doi.org/10.1093/sleep/zsad253
Sleep onset timing and cardiovascular disease, UK Biobank, 2021: https://doi.org/10.1093/ehjdh/ztab088
Recommended amount of sleep for adults, AASM and Sleep Research Society, 2015: https://doi.org/10.5665/sleep.4716
Alcohol and sleep, review, 2013: https://doi.org/10.1111/acer.12006
Room light before bedtime and melatonin, 2011: https://doi.org/10.1210/jc.2010-2098
Thermal environment, sleep and circadian rhythm, review, 2012: https://doi.org/10.1186/1880-6805-31-14
Eye masks and earplugs in hospital patients, review of 36 studies, 2026: https://doi.org/10.1038/s41598-026-39187-y
Warm bath or shower before bed, review of 17 studies, 2019: https://doi.org/10.1016/j.smrv.2019.04.008
Alcohol and heart rate variability during sleep, 4,098 Finnish workers, 2018: https://doi.org/10.2196/mental.9519
Sleep and susceptibility to the common cold, 2015: https://doi.org/10.5665/sleep.4968
Sugars and neutrophil phagocytosis, 1973: https://doi.org/10.1093/ajcn/26.11.1180
Caffeine and sleep, review of 24 studies, 2023: https://doi.org/10.1016/j.smrv.2023.101764
Not medical advice.
When we can't find meaning, we tend to distract ourselves with pleasure, and when pleasure is hard to find, we can hide in hard work and call it meaning. Jared looks at purpose for moms and for men, the law of the jungle versus the law of love, and what the research links purpose to when it comes to your health.
Read the full newsletter issue: https://www.1upyourlife.com/p/meaning-or-pleasure
Every study mentioned in this episode
Parents Under Pressure, U.S. Surgeon General's advisory on parents, 2024: https://www.hhs.gov/sites/default/files/parents-under-pressure.pdf
The pains and pleasures of parenting, review, 2014: https://doi.org/10.1037/a0035444
Drug overdose deaths in the U.S. in 2024, CDC data brief, 2026: https://www.cdc.gov/nchs/products/databriefs/db549.htm
Sports betting legalization and searches for gambling addiction help, 2025: https://doi.org/10.1001/jamainternmed.2024.8193
Multiple adverse childhood experiences and health, systematic review and meta-analysis, 2017: https://doi.org/10.1016/S2468-2667(17)30118-4
Purpose in life and mortality, meta-analysis, 2026: https://doi.org/10.1017/S0033291726104863
Meaning and purpose in life and dementia risk, meta-analysis, 2023: https://doi.org/10.1016/j.archger.2022.104847
Sense of purpose and later health in U.S. adults over 50, 2022: https://doi.org/10.1177/08901171211038545
Religious service attendance and deaths of despair among U.S. health professionals, 2020: https://doi.org/10.1001/jamapsychiatry.2020.0175
A happy life versus a meaningful life, givers and takers, 2013: https://doi.org/10.1080/17439760.2013.830764
Also mentioned: Viktor Frankl, Man's Search for Meaning. Chris Williamson, Frankl's Inverse Law: https://chriswillx.com/3-minute-monday-meaning-boys-critics/
Jared's book NINE70: https://www.amazon.com/dp/B0HDQXZM12
The free Flourishing Assessment: https://flourishingassessment.com
Not medical advice.
Is sleep before midnight really better? Deep sleep and your biggest growth hormone release follow whenever you fall asleep, and the research points to falling asleep between 10 and 11 pm, a regular schedule, seven-plus hours, a dark and cool room, morning light and short naps.
Read the full newsletter issue: https://www.1upyourlife.com/p/supercharge-sleep
Every study mentioned in this episode
Deep sleep early in the night, REM sleep toward morning, 1995: https://doi.org/10.1523/JNEUROSCI.15-05-03526.1995
Growth hormone and the first deep sleep, review, 1996: https://doi.org/10.1016/s0022-3476(96)70008-2
Sleep onset timing and heart disease, UK Biobank, 2021: https://doi.org/10.1093/ehjdh/ztab088
Sleep regularity and mortality, UK Biobank, 2024: https://doi.org/10.1093/sleep/zsad253
Irregular sleep, sleep duration and heart attack, stroke or heart failure, UK Biobank, 2025: https://doi.org/10.1136/jech-2024-222795
Recommended sleep for adults, AASM and Sleep Research Society, 2015: https://doi.org/10.5665/sleep.4716
Short sleep among U.S. adults, CDC, 2016: https://doi.org/10.15585/mmwr.mm6506a1
Midlife sleep duration and dementia, Whitehall II, 2021: https://doi.org/10.1038/s41467-021-22354-2
Day and night light exposure and mortality, UK Biobank, 2024: https://doi.org/10.1073/pnas.2405924121
Night light exposure and heart disease, UK Biobank, 2025: https://doi.org/10.1001/jamanetworkopen.2025.39031
Sleeping with a TV or light on and weight gain in women, 2019: https://doi.org/10.1001/jamainternmed.2019.0571
Warm bath or shower before bed, systematic review and meta-analysis, 2019: https://doi.org/10.1016/j.smrv.2019.04.008
Hot nights and lost sleep in 68 countries, 2022: https://doi.org/10.1016/j.oneear.2022.04.008
Night noise and awakenings, WHO systematic review, 2018: https://doi.org/10.3390/ijerph15030519
Grogginess after waking from deep sleep, review, 2000: https://doi.org/10.1053/smrv.2000.0098
Naps and heart risk, meta-analysis, 2015: https://doi.org/10.5665/sleep.5246
Nap length and health risk, meta-analysis, 2020: https://doi.org/10.1016/j.sleep.2020.08.009
Exercise and sleep, meta-analysis, 2015: https://doi.org/10.1007/s10865-015-9617-6
Book mentioned: Nick Littlehales, Sleep.
Not medical advice.
Even a good, faithful marriage can let intimacy settle into routine. How Annette and I brought the fire back, and what the research says about frequency, novelty and wanting.
Read the original issue: https://www.1upyourlife.com/p/why-my-wife-and-i-stopped-having-s-x
Every study mentioned in this episode
Sexual frequency and well-being, three studies, 30,645 people, Social Psychological and Personality Science, 2015: https://doi.org/10.1177/1948550615616462
Carnegie Mellon experiment, couples asked to double sexual frequency, Journal of Economic Behavior & Organization, 2015: https://doi.org/10.1016/j.jebo.2015.04.021
Couples doing novel, exciting activities together, Journal of Personality and Social Psychology, 2000: https://doi.org/10.1037/0022-3514.78.2.273
Warren Buffett, 2009 Berkshire Hathaway annual meeting, as reported by CNBC.
Not medical advice.
Emotional attunement is the discipline of staying steady when your kid can't. A story about fourteen cats and a six-year-old's threats, and what the research says about how we respond to big emotions.
Read the original issue: https://www.1upyourlife.com/p/you-re-the-worst-parent-ever
Every study mentioned in this episode
Still-face studies, systematic review and meta-analysis of infant stress responses, Developmental Review, 2018: https://doi.org/10.1016/j.dr.2018.06.002
Harsh verbal discipline and teens, 976 families followed from 13 to 14, Child Development, 2014: https://doi.org/10.1111/cdev.12143
Tuning in to Kids, randomized trial of emotion coaching with 216 parents, Journal of Child Psychology and Psychiatry, 2010: https://doi.org/10.1111/j.1469-7610.2010.02303.x
Not medical advice.
What keeps a brain sharp? The research points less to pills and powders and more to everyday habits and when you do them: morning light, walking, real food, time with people, and a cool, dark night. Here is a day of those habits, and what the research says about each one.
Read the full newsletter issue: https://www.1upyourlife.com/p/your-brain-runs-on-a-clock
Every study mentioned in this episode
Lancet Commission on dementia prevention, 2024: https://doi.org/10.1016/S0140-6736(24)01296-0
Daytime and night light and mental health, UK Biobank light sensors, 2023: https://doi.org/10.1038/s44220-023-00135-8
Walking and hippocampus volume trial, 2011: https://doi.org/10.1073/pnas.1015950108
Pooled exercise trials on hippocampal volume, 2020: https://doi.org/10.1002/hipo.23292
Daily steps and dementia risk, UK Biobank, 2022: https://doi.org/10.1001/jamaneurol.2022.2672
MIND diet randomized trial, New England Journal of Medicine, 2023: https://doi.org/10.1056/NEJMoa2302368
Ultra-processed food and cognitive decline, Brazil, 2022: https://doi.org/10.1001/jamaneurol.2022.4397
Harvard Health on dopamine fasting, 2020: https://www.health.harvard.edu/blog/dopamine-fasting-misunderstanding-science-spawns-a-maladaptive-fad-2020022618917
Dopamine and the willingness to do hard mental work, Science, 2020: https://doi.org/10.1126/science.aaz5891
Blocking mobile internet for two weeks, randomized trial, 2025: https://doi.org/10.1093/pnasnexus/pgaf017
Loneliness and dementia risk, meta-analysis of more than 600,000 people, 2024: https://doi.org/10.1038/s44220-024-00328-9
Sleep loss and social withdrawal, 2018: https://doi.org/10.1038/s41467-018-05377-0
Evening room light and melatonin, 2011: https://doi.org/10.1210/jc.2010-2098
Sleep onset timing and heart disease, UK Biobank, 2021: https://doi.org/10.1093/ehjdh/ztab088
Recommended sleep for adults, AASM and Sleep Research Society, 2015: https://doi.org/10.5665/sleep.4716
Sleep duration and thinking, UK Biobank, 2022: https://doi.org/10.1038/s43587-022-00210-2
Sauna use and dementia in Finnish men, 2016: https://doi.org/10.1093/ageing/afw212
Not medical advice.
From the publisher's feed