All articles
Grief and the body: how loss raises your heart rate, breaks your sleep, and why "broken heart" is literal
Grief & loss
Doomscrolling before bed: what your phone really does to your sleep — light, a wired brain, and stolen hours
Insomnia
Stuck in fight or flight: why you can't relax and how to get out of it
Stress
Cannabis and sleep: why it helps you fall asleep but can steal your REM and recovery
Cannabis
Why does coffee make me sleepy? The caffeine crash, the wired-but-tired trap, and how long caffeine really lasts
Caffeine
How many days does your body really need to recover from one night of drinking?
Alcohol
What alcohol does to your body overnight: the HRV crash, higher resting heart rate, and lost REM you can see the next morning
Alcohol
Why breakups hurt so much — the brain science of heartbreak, and how to help yourself heal
Grief & loss
Your body across the menstrual cycle: how resting heart rate, HRV, temperature, sleep, and energy shift from day 1 to day 28
Menstrual Cycle
The REM sleep you're losing after 40 — why deep, dreaming sleep fades, and what it costs
Sleep quality
Is it stress or perimenopause? How to tell them apart — and what your HRV and sleep can (and can't) show
Menstrual Cycle
HRV by age: normal ranges by decade, why it declines, and how to read yours
HRV