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Verdicts
Each verdict is item × claim: the research rank, our call, what it costs, and the safety note. Prefer to start from what you want to fix? Pick a goal
Calmer mood
A daily brisk walk: the strongest-evidenced thing on this list, and it's free
Faster recovery
Strength training twice a week: better mood and sleep, and you don't need a gym
Sleep better
A caffeine cutoff after 2 pm: the cheapest hour of sleep you'll ever get back
Sleep better
A fixed wake time: the free change with the best sleep evidence
Calmer mood
Ten minutes of daily breathing: stress evidence that rivals medication, at zero cost
Sleep better
No alcohol near bedtime: you fall asleep faster and sleep worse
More energy
16:8 fasting: a scheduling trick, not a metabolic one
Sleep better
Morning daylight: the timer that sets tonight's bedtime
Sleep better
Dimming screens before bed: real, but smaller than the hype
Calmer mood
Cold showers for mood: a jolt people like, on evidence that can't be blinded
Sharper focus
Caffeine for focus: it works, and the timing is the whole game
Faster recovery
Creatine for strength: the rare supplement that clearly works — if you train
Sleep better
Calmer mood
Omega-3 for mood: a modest effect for low mood, not a lift for good days
More energy
Sleep better
Magnesium for sleep: a small, uncertain effect — mostly if you're low on it
Sharper focus
L-theanine for focus: a calmer edge, not a sharper one
Calmer mood
Ashwagandha for stress: promising small trials, most paid for by the sellers
Gut comfort
Probiotics for gut comfort: strain-specific, symptom-specific, and easy to overpay for
Clearer skin
Collagen for skin: measurable on instruments, doubtful in the mirror, and mostly seller-funded
Verdicts summarise published research at the population level and never claim an effect for you. Safety notes and sources are on every verdict page. Not medical advice.