Korva rescues the ideas worth keeping from podcasts. Each one becomes a Card.
Nighttime screen light can trigger large cortisol increases, even when sleep onset feels normal, disrupting next-morning cortisol and blood glucose.
One physiological sigh can rapidly reduce acute stress: inhale twice, then exhale until your lungs are empty.
Heating your body’s surface can lower core temperature: the brain detects warmth and starts cooling, helping you sleep.
Ten air squats every 45 minutes may match a daily 30-minute walk metabolically, and may edge ahead.
GLP drugs can raise GLP levels roughly a thousandfold or more, an exposure the body has not historically encountered.
Someone struggling may need a focused episode, not a generic pep talk. Find one about their problem and send it.
Stress changes breathing chemistry: stressed people exhale carbon dioxide quickly, while calmer people sustain longer exhales.
A five-to-ten-minute walk after eating may flatten glucose peaks, reduce energy crashes, and support metabolic health.
Seated calf raises, called soleus push-ups, repeatedly engage the soleus and blunt blood-glucose peaks.
Low-level repeated muscle contractions during walking buffer post-meal blood-glucose rises.
MIT research inspired a sleep mask that uses behind-the-ear electrodes to reproduce sleep-related eye movements.
Screens are too dim to trigger morning cortisol, yet nighttime screen light can still push cortisol upward.
Your day’s first daylight needs to reach your eyes, even through clouds. Glass does not count.
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