Cheers Health Restore Study

Inclusion Criteria: * Adults aged 21 years or older * Regular alcohol consumers (defined as ≥1 drinking night per week) * Ownership of and willingness to use a wearable device compatible with the Alethios platform (e.g., Fitbit, Apple Watch, Oura) * Ability and willingness to log alcohol consumption, Cheers Restore usage, and complete daily and weekly surveys via smartphone or web * Willingness to use Cheers Restore during the study period when consuming alcohol * English-speaking, capable of understanding informed consent Exclusion Criteria: * AUDIT-C score above gender-specific thresholds for hazardous drinking (≥4 for men, ≥3 for women) * History of alcohol use disorder or prior treatment for substance misuse * Routine binge drinking (≥5 drinks/occasion for men, ≥4 for women) * Use of confounding substances: * THC (any form) * Recreational drugs * Prescription stimulants, sedatives, or sleep aids * Diagnosed sleep or psychiatric conditions known to impair sleep quality (e.g., insomnia, obstructive sleep apnea, restless legs syndrome, narcolepsy, major depressive disorder, post-traumatic stress disorder, bipolar disorder, schizophrenia, attention deficit/hyperactivity disorder) * Pregnancy or breastfeeding * Anticipated travel or scheduling conflicts disrupting normal sleep/alcohol routines * Inability to comply with platform-based data collection requirements