Just as some aromas calm you down, others will perk you up. Researchers have found that this is especially true of eucalyptus and pine. The spicy aromas of clove, basil, black pepper, and cinnamon -- and to a lesser degree patchouli, lemongrass, and sage -- are other aromatherapy stimulants that reduce drowsiness, irritability, and headaches. Several large Tokyo companies circulate lemon, cypress, and peppermint through their air-conditioning and heating systems to keep employees alert.
The stimulating essential oils have been shown to prevent the sharp drop in attention that typically hits after working for thirty minutes. Clove, cinnamon, lemon, cardamom, fennel, and angelica act as stimulants. Using aromatherapy stimulants is healthier for you than ingesting stimulants such as coffee because the scents provide energy without causing an adrenaline rush that strains the adrenal glands.
Essential oils for energy: cinnamon, clove, cypress, eucalyptus, fir, ginger, lemon, lemongrass, peppermint, rosemary