Most founders use cold exposure wrong. Here's how to fix it.

Brief cold exposure triggers a norepinephrine release, which boosts alertness and mental clarity better than coffee. But only if you do it right.

Here's what works:
- End your shower with 30 seconds of cold
- Breathe deeply and stay relaxed, don't tense up before it
- Do it in the morning, not before bed
- Build slowly: 15s to 30s then 60s over two weeks (1/2)