You can browse the library in the app, or just ask NOYU in the chat. Saying "what should I test?" or "I want to work on my sleep" is enough to get a shortlist with the reasoning attached.
What is in the library
Every experiment is behavioural and has research behind it. A few examples: stopping caffeine earlier in the day, measured against your sleep score. A fortnight off alcohol, measured against your HRV. Building up your easy Zone 2 cardio over six weeks, measured against your sleeping heart rate.
Each one comes with a sensible metric and window already chosen, and you can change either at setup if something else matters more to you. The full library lives in the app and keeps growing.
The change is shaped to you
Experiments are not generic instructions. Where NOYU knows enough, it fits the change to your actual life.
"Stop caffeine earlier" does not tell everyone to stop at 2pm. NOYU works back from your own usual bedtime and gives you a real time, so you might see "No caffeine after 3pm".
"Increase Zone 2 cardio" reads the easy aerobic minutes you have recorded recently and sets your target one step above that. Someone doing 90 minutes a week gets a different target from someone doing none. There is a ceiling so the target never runs away with itself, and if you are already at the ceiling NOYU tells you honestly that there is no headroom rather than inventing a target.
Picking the metric
You can measure an experiment against your daily scores, your sleep and heart metrics, or your own ratings of things like energy, mood and stress.
Two things to weigh:
- Pick what you care about. If the reason you are cutting alcohol is that you want to feel better in the mornings, measure energy, not HRV.
- Pick something that moves. Metrics that shift over months rather than weeks, like weight or VO2 Max, will not show anything useful inside a two-week window.
When it starts
NOYU picks a sensible start rather than making you choose. If you set up a morning experiment at four in the afternoon, it will start tomorrow morning, because starting today would burn a day.
You will also get a daily reminder at a time that suits the change: morning for a light experiment, evening for a wind-down one. You can turn the reminder off if you would rather not have it.
