Terpenes are believed to interact with the endocannabinoid system, which is responsible for regulating mood, stress, pain, and other bodily functions. Some terpenes may have anti-anxiety and anti-depressant properties, while others may have the opposite effect. For example, limonene is a citrusy terpene that may boost mood and reduce stress, while pinene is a piney terpene that may enhance alertness and memory. Linalool is a floral terpene that may have a soothing and sedative effect, while myrcene is an earthy terpene that may induce relaxation and sleepiness.