Issue 05
Circadian Contrast Showers
Alternating heat & cold to anchor your morning chronotype.
Therma Weekly
Issue #05 of Therma Weekly.
Scientific Notes
Thermal stress & norepinephrine timing
We dissect Scandinavian hydrotherapy research that shows a 530% uptick in norepinephrine after 30 seconds of cold exposure, plus how heat priming keeps vessels elastic enough to avoid the “shiver crash.” Includes practical timing windows for dawn vs. dusk chronotypes.
Personal Log
Personal log: Trading doom scrolls for steam
I used Therma’s check-ins to score my mood before and after each shower circuit. The data nudged me: on cold-heavy days I was jittery, but adding a 90-second warm rinse before bed helped me fall asleep 14 minutes faster.
Put this ritual into practice
Capture the signals, track the data, and translate it into your own micro-climate with Therma.
Save this protocol in Therma