Guayaki Sustainable Rainforest Products, Inc.

This study looks at how different caffeinated drinks change how you feel and your body's responses. About 150 healthy adults who regularly drink caffeine will try their usual drink and a test drink. They'll rate their feelings and use a wearable device to track body signals.

This study looks at how healthy adults who regularly drink sweetened, caffeinated beverages feel after trying different versions. Participants will rate their feelings and have their body's responses measured. The goal is to understand the effects of these drinks, not to treat an…