u/Few-Description-6742

I sit 30-45m most mornings (mostly noting-style vipassana, some shikantaza). About a year ago I started noticing something — I'd reach the end of a sit and realize my head had slowly dropped 10-15° forward without me catching it. Not slumping dramatically, just slow drift over 20 minutes.

Once I started paying attention to it, I realized it correlates with the sits where mind-wandering was worst. Like the body proprioception goes offline at the same time as metacognition does.

Curious if other long-sit practitioners notice this. Have you found ways to catch it? Body scans every N minutes? Some teachers say "ignore the body, it'll find its own level" — but that doesn't seem to be my experience.

(Full disclosure: this question turned into me building a small thing to measure my own drift using AirPods motion sensors. Happy to share if useful, but mostly curious about the phenomenology first.)

I sit 30-45m most mornings (mostly noting-style vipassana, some shikantaza). About a year ago I started noticing something — I'd reach the end of a sit and realize my head had slowly dropped 10-15° forward without me catching it. Not slumping dramatically, just slow drift over 20 minutes.

Once I started paying attention to it, I realized it correlates with the sits where mind-wandering was worst. Like the body proprioception goes offline at the same time as metacognition does.

Curious if other long-sit practitioners notice this. Have you found ways to catch it? Body scans every N minutes? Some teachers say "ignore the body, it'll find its own level" — but that doesn't seem to be my experience.

(Full disclosure: this question turned into me building a small thing to measure my own drift using AirPods motion sensors. Happy to share if useful, but mostly curious about the phenomenology first.)

I've been sitting daily for a while now and noticed something I can't quite explain: I'll start a 20-minute sit upright and alert, but somewhere around minute 12-15 I find I've slowly drifted into a slouch without catching it. Not like falling asleep, more like a slow forward lean.

Anyone else experience this? And if so, do you do anything to catch it or do you just let it be?

I'm not sure if it's a beginner thing, a posture thing, or just normal practice.