Protocol is a self-experiment lab — not another habit tracker. Most habit apps tell you whether you showed up. Protocol tells you whether it worked. You pick an experiment (no sugar, cold showers and other) set a duration of 14–30 days, log a daily check-in, and track your metrics against a baseline you capture on Day 0. At the end you make one explicit decision: keep it or drop it Over time you build a personal record of what actually works for you — backed by your own data, not someone elses