How the phases work

Each of your four neurochemical categories has at least one core habit — the habit with the strongest scientific evidence for that system. Your brain phase rises as you complete more of your chosen core habits across categories.

Phase 3 — Foundation Active is the key threshold. At least 50% of your core habits across all four categories are done. The evidence says this is a genuinely good day for your brain.

Secondary and bonus habits deepen each category further — they do not change your brain phase. The phase is driven purely by your core habits.