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The library

30+ experiments. Zero promises.

Every card carries its research rationale, its honest length, and the 1–10 outcome you'll rate. Startable experiments run the fixed 14-day trial. Slow-builders need 30–60 days plus a washout — they arrive once washout-aware scheduling ships.

RESEARCH-GROUNDED · SINGLE-VARIABLE · SAFETY-SCREENED

COMMUNITY RESULTS — NOT YETWhen members run these experiments and consent to pooling, anonymized community outcomes appear on these cards — including the null results. Until then: the research and the protocol, not numbers that don't exist.

POOLED ONLY FROM CONSENTED RUNS
NULLS INCLUDED · NEVER INVENTED

SLEEP8 EXPERIMENTS

Blue-Light Glasses vs. None for Sleep14 DAYS · 1–10 SLEEP QUALITY

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Chamomile Tea vs. Baseline for Sleep14 DAYS · 1–10 SLEEP QUALITY

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Earlier Bedtime vs. Baseline for Sleep14 DAYS · 1–10 SLEEP QUALITY

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Glycine vs. Baseline for SleepGlycine, a simple amino acid taken before bed, is a quieter sleep contender — small studies link it to faster sleep onset and better next‑day alertness.14 DAYS · 1–10 SLEEP QUALITY

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Magnesium vs. Baseline for SleepMagnesium glycinate is one of the most popular sleep supplements — but the clinical evidence is genuinely mixed, which makes it a perfect candidate to test on your own sleep.14 DAYS · 1–10 SLEEP QUALITY

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No Alcohol vs. Baseline for SleepA nightcap feels like it helps you sleep — but it's one of the best‑documented disruptors of sleep quality. This is a behavior experiment, and the data often surprises people.14 DAYS · 1–10 SLEEP QUALITY

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Screen-Free Evenings vs. Standard for Sleep14 DAYS · 1–10 SLEEP QUALITY

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Weighted Blanket vs. Standard Bedding for Sleep14 DAYS · 1–10 SLEEP QUALITY

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CALM7 STARTABLE · 1 COMING SOON

Ashwagandha vs. Baseline for CalmAshwagandha is the go‑to adaptogen for stress, with meta‑analysis support for lowering cortisol — but responses vary and it builds up over weeks.45 DAYS + WASHOUT · 1–10 CALM

Box Breathing vs. Baseline for CalmNo supplement required: 5 minutes of paced 'box' breathing (4‑4‑4‑4) is a free, evidence‑backed way to shift your nervous system. Does a daily practice move your HRV?14 DAYS · 1–10 CALM

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Daily Meditation vs. Baseline for Calm14 DAYS · 1–10 CALM

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Gratitude Journaling vs. Baseline for Calm14 DAYS · 1–10 CALM

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L-Theanine vs. Baseline for CalmL‑theanine, the amino acid in green tea, is studied for calm‑without‑drowsiness — useful for daytime stress when you can't afford to feel sedated.14 DAYS · 1–10 CALM

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Lavender vs. Baseline for Calm14 DAYS · 1–10 CALM

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Magnesium vs. Baseline for CalmMagnesium is best known for sleep, but it's also studied for everyday stress and tension. The catch: it helps most if you're running low — which many people are — making a personal read genuinely useful.14 DAYS · 1–10 CALM

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Reduced Caffeine vs. Baseline for Calm14 DAYS · 1–10 CALM

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FOCUS7 STARTABLE · 1 COMING SOON

Caffeine vs. Matcha for Focus14 DAYS · 1–10 FOCUS

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Coffee Nap vs. Caffeine for FocusThe 'coffee nap': drink caffeine, then nap 20 minutes while it kicks in. You wake just as the caffeine clears the sleepiness a nap already lowered — but whether it beats plain caffeine for you depends on your schedule and how you nap.14 DAYS · 1–10 FOCUS

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Dark Chocolate vs. Baseline for FocusCocoa is rich in flavanols, plant compounds studied for blood flow and attention. A square of high-percentage dark chocolate might sharpen you — or just be a tasty placebo. Worth a clean test.14 DAYS · 1–10 FOCUS

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Green Tea vs. Coffee for Focus14 DAYS · 1–10 FOCUS

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Hydration vs. Baseline for Focus14 DAYS · 1–10 FOCUS

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L-Theanine + Caffeine vs. Caffeine for FocusThe classic nootropic stack: caffeine for drive, L‑theanine to take the edge off. Does adding L‑theanine actually sharpen your focus over plain caffeine?14 DAYS · 1–10 FOCUS

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Lion's Mane vs. Baseline for Focus45 DAYS + WASHOUT · 1–10 FOCUS

Reduced Screen Time vs. Baseline for Focus14 DAYS · 1–10 FOCUS

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MOOD5 STARTABLE · 3 COMING SOON

Afternoon Walk vs. No Walk for Mood14 DAYS · 1–10 MOOD

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Exercise vs. Baseline for MoodMovement is one of the best-supported mood boosters there is — but 'do more exercise' hides the useful question: how much does it actually lift your mood, and what kind works for you? A personal test makes it concrete.14 DAYS · 1–10 MOOD

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Gratitude Journaling vs. Baseline for Mood14 DAYS · 1–10 MOOD

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Morning Sunlight vs. Baseline for Mood14 DAYS · 1–10 MOOD

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Omega-3 vs. Baseline for MoodOmega‑3 (EPA/DHA) fish oil is studied for mood support, with the strongest signal in higher‑EPA formulas — but effects are gradual and individual.45 DAYS + WASHOUT · 1–10 MOOD

Probiotics vs. Baseline for MoodThe 'gut-brain axis' has made probiotics a trendy mood supplement. A few specific strains show small benefits in studies — but results are strain-specific and mixed, so whether your product does anything for your mood is a genuinely open question.30 DAYS + WASHOUT · 1–10 MOOD

Reduced Social Media vs. Baseline for Mood14 DAYS · 1–10 MOOD

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Vitamin D vs. Baseline for MoodLow vitamin D is associated with low mood, especially in darker months — but supplementing only clearly helps if you're actually deficient, which makes a personal read valuable.45 DAYS + WASHOUT · 1–10 MOOD

ENERGY7 STARTABLE · 1 COMING SOON

Cold Shower vs. Warm Shower for Energy14 DAYS · 1–10 ENERGY

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Fasted Mornings vs. Breakfast for Energy14 DAYS · 1–10 ENERGY

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Green Tea vs. Coffee for EnergyLower caffeine, more L‑theanine, a gentler curve — green tea promises steadier energy than coffee without the crash. Does it hold up for your afternoons?14 DAYS · 1–10 ENERGY

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Hydration vs. Baseline for Energy14 DAYS · 1–10 ENERGY

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Morning Sunlight vs. Baseline for EnergyTen minutes of morning daylight is a free circadian lever — it anchors your body clock, which can improve daytime energy and nighttime sleep alike.14 DAYS · 1–10 ENERGY

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Morning Walk vs. No Walk for Energy14 DAYS · 1–10 ENERGY

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Rhodiola vs. Baseline for EnergyRhodiola is an adaptogen studied for fatigue resistance, especially under stress — a candidate when your energy dips are tied to burnout rather than poor sleep.30 DAYS + WASHOUT · 1–10 ENERGY

Zone 2 Cardio vs. HIIT for Energy14 DAYS · 1–10 ENERGY

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PERFORMANCE6 STARTABLE · 2 COMING SOON

Beetroot Juice vs. Baseline for Performance14 DAYS · 1–10 PERFORMANCE

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Beta-Alanine vs. Baseline for Performance30 DAYS + WASHOUT · 1–10 PERFORMANCE

Caffeine vs. Baseline for PerformanceCaffeine is the most reliable legal performance booster there is — it lowers perceived effort so hard things feel easier. But dose, tolerance, and your sleep all shape whether it helps you train or just wires you. Test your own dose.14 DAYS · 1–10 PERFORMANCE

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Creatine vs. Baseline for StrengthCreatine monohydrate is one of the most-researched supplements in sport for strength and power. 'Backed on average' still isn't 'true for you,' though — and roughly a quarter of people respond little. A personal test confirms your group.30 DAYS + WASHOUT · 1–10 PERFORMANCE

L-Citrulline vs. Baseline for Performance14 DAYS · 1–10 PERFORMANCE

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Morning vs. Evening Training for Performance14 DAYS · 1–10 PERFORMANCE

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Pre-Workout Carbs vs. Fasted Training for Performance14 DAYS · 1–10 PERFORMANCE

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Sleep Extension vs. Baseline for Performance14 DAYS · 1–10 PERFORMANCE

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RECOVERY7 STARTABLE · 1 COMING SOON

Active Recovery vs. Complete Rest for Recovery14 DAYS · 1–10 RECOVERY

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Cold Plunge vs. Sauna for RecoveryTwo opposite rituals, both sold for recovery. Cold blunts soreness and inflammation; heat relaxes and boosts blood flow. They can even work against different goals — so which leaves you feeling more recovered is worth testing.14 DAYS · 1–10 RECOVERY

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Compression Garments vs. Baseline for Recovery14 DAYS · 1–10 RECOVERY

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Curcumin vs. Baseline for Recovery30 DAYS + WASHOUT · 1–10 RECOVERY

Foam Rolling vs. Baseline for Recovery14 DAYS · 1–10 RECOVERY

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Post-Workout Protein Timing vs. Baseline for Recovery14 DAYS · 1–10 RECOVERY

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Stretching Routine vs. Baseline for Recovery14 DAYS · 1–10 RECOVERY

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Tart Cherry Juice vs. Baseline for Recovery14 DAYS · 1–10 RECOVERY

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MEMORY5 STARTABLE · 3 COMING SOON

Aerobic Exercise vs. Baseline for Memory14 DAYS · 1–10 MEMORY

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Bacopa vs. Baseline for MemoryBacopa is an Ayurvedic herb with some of the better human evidence for memory — but it builds slowly over weeks, making it a poor fit for guessing and a great fit for a longer self-experiment.60 DAYS + WASHOUT · 1–10 MEMORY

Blueberries vs. Baseline for Memory30 DAYS + WASHOUT · 1–10 MEMORY

Caffeine vs. Baseline for Memory14 DAYS · 1–10 MEMORY

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Omega-3 vs. Baseline for Memory45 DAYS + WASHOUT · 1–10 MEMORY

Reduced Multitasking vs. Baseline for Memory14 DAYS · 1–10 MEMORY

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Sleep Extension vs. Baseline for Memory14 DAYS · 1–10 MEMORY

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Spaced Review vs. Massed Review for Memory14 DAYS · 1–10 MEMORY

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52 startable today · 12 longer washout protocols arrive with washout-aware scheduling. The research says “maybe” — your run says what it does for you.

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