Aromatherapy offers gentle assistance to help you rebuild your emotional equilibrium after a stress-filled day. Just inhaling the scents of lavender and sandalwood increases the alpha waves in your brain. These waves decrease all the miscellaneous, idle chatter that runs through your mind and encourages you to relax. These two aromas have a long history of creating meditative states. Other alpha wave essential oils are eucalyptus, pine, and fir, which are stimulants, so they offer an extra element of increased attention when you sniff them. Blood pressure rates jump when you're nervous, but just sniffing the scents of marjoram, orange, or geranium drops your pressure two to five points (both the systolic and diastolic rates). That's not significant enough of a drop if you suffer from high blood pressure, but it does indicate a lowered level.