Researchers studied the effects of aromatherapy (lavender and peppermint essential oils) and deep breathing on comprehension through a modified GRE comprehension task. Forty-seven Introduction to Psychology students were randomly assigned to either a lavender or peppermint essential oil condition and engaged in a deep breathing exercise or mental math activity for one minute. Participants read two passages from a practice GRE and answered the related multiple-choice questions. There were no main effects; however, the interaction is approaching significance. Additional data on stress suggested that deep breathing did reduce stress compared to that math tasks. Future research could expand the activities to correlate with the effects of the aromas to receive the optimal outcome.