Why a “sleep stack”?
Because sleep is multi-causal. The safest stacks combine low-risk inputs that reinforce the same outcome (circadian alignment + reduced arousal).
- Fixed wake time (±30 minutes)
- Morning outdoor light: Sunlight
- Stable caffeine dose + earlier cutoff
- Bedroom environment: cool + dark + quiet
- Wind-down routine (screen dimming, relaxation)
- Optional compound experiments (one at a time; interaction-aware)
| Category |
Risk |
Notes |
| Sedatives / alcohol |
Moderate–High |
Can worsen sleep architecture and next-day function |
| Stimulants |
Moderate |
Often help daytime performance while harming sleep |
| Supplements |
Variable |
Check Interactions Database |
- Primary: sleep timing consistency + total sleep time
- Secondary: sleep latency + next-day energy
- Cadence: daily logs + weekly averages
- If one element adds effort without moving the metric, remove it.
- If any new concerning symptom occurs, stop and see Red Flags.