# Biometric Tracking for Muscle Relaxation Gives You Real Feedback
The science
Progressive muscle relaxation means tensing then releasing muscle groups one at a time from your feet up. The cortisol reduction numbers are real — a 28% drop — and heart rate does shift within about 10 minutes. Most people carry tension without noticing it until they're exhausted or dragging at work.
What to actually do (1/5)
Pick a consistent time each day. Start with your toes, curling them hard for 5 seconds, then letting go for 10. Move up through your legs, core, hands, arms, shoulders, using the same rhythm.
Check your heart rate or pulse before you start and again when you finish. Rate your stress from 1 to 10 before and after. Write it down somewhere you can look at the data over time.
After two weeks you can see what's changing on paper — not just how things feel.
A couple things most people skip (2/5)
If you rush through the muscle groups the nervous system doesn't register the relaxation. Slow down and give yourself a minute or two at the end. Check in before and after to see if anything shifted.
People tend to carry the most tension in their jaw and shoulders, so spend extra time on those areas.
What to expect in about two weeks (3/5)
When people practice consistently (same time, every day) their pre-session ratings start lower without trying. Most people report that before and after ratings settle closer together — meaning recovery happens faster. The data also tends to line up with other changes, like falling asleep more easily or bouncing back quicker after stressful moments.
When you track it, you can see what's actually working instead of guessing. (4/5)
biohacks