diff --git a/Health/sleep-system.md b/Health/sleep-system.md
index 768e95f..8a7a798 100644
--- a/Health/sleep-system.md
+++ b/Health/sleep-system.md
@@ -18,6 +18,12 @@ tags: [health, sleep, system]
 | Lights out floor | 23:30 — never past midnight on work nights |
 | Coffee cut-off | ~14:00 |
 
+## Wake mechanics
+
+- One alarm on the watch, no snooze ever. The decision is made at 21:30, not 06:00.
+- Watch charging ritual: plug in at ~21:30 (doubles as the wind-down cue).
+- Phone sleeps outside the bedroom (bathroom charger). Backup alarm there only until the watch reliably wakes you.
+
 ## Ramp (the 50% rule applied to sleep)
 
 - Week 1 (Sep 1–7): wake 07:00 · lights out 23:45