This 5-day study compares how canned, caffeinated yerba mate beverages, with different amounts of sugar and yerba mate, affects mood and well-being. Participants will drink one of three test beverages and report their experiences throughout the day.
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Join a fully virtual 5-day study exploring how canned yerba mate beverages with varying sugar and yerba mate levels influence energy, alertness, mood, and overall well-being. You’ll be randomly assigned to drink one of three test beverages and complete a few quick check-ins throughout each day, helping us map how you feel over time after each serving.
Complete a short screening questionnaire through our online platform to confirm eligibility for the study. If eligible, you’ll review the study details and sign an electronic consent form through the Alethios platform.
Complete baseline demographics and attitude assessment, connect your wearable device, confirm your consumption instructions, and begin your daily tracking the next day.
Complete daily and weekly surveys through the Alethios platform about your consumption adherence, preferences, and energy levels.
After completing all study requirements, adherent participants will receive a $75 Amazon gift card and access to their individual study data
We’re studying how yerba mate’s natural caffeine profile—combined with different sugar levels—may shape the way people feel and function during the day. By comparing three canned yerba mate formulations, the research looks at patterns in mood, perceived well-being, energy, and alertness over time, and how these effects differ from person to person in real-world routines.
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