Citrus: Sweet Orange, Lemon and Grapefruit can boost your body’s production of serotonin, a hormone that makes you feel happy. They also reduce levels of the stress hormone norepinephrine, so you’ll wake up but still feel calm. Lemon might be the most powerful of the citrus smells—it’s been shown that smelling it can increase mental stimulation. Since these scents come from everyday foods, you could try eating a grapefruit each morning or squeezing some lemon or orange juice into a smoothie.
Peppermint: This refreshing scent will make you feel alert, focused, and stimulated. Peppermint helps stay focused on tasks that require sustained attention like studying for a test. Peppermint tea is especially soothing and aromatic.
Rosemary: This aroma will get your brain revved up and awake again, giving you more mental and physical energy. Another bonus: Rosemary can help you work better and faster, so keep sniffing it throughout the day.
Eucalyptus: This woodsy scent will definitely help wake you up. If you’re stuffed up due to allergies or congestion, breathing in eucalyptus will also help clear up your nasal passages.
A combination of citrus, peppermint, rosemary and eucalyptus in a diffuser will keep you alert and awake all day!