Have you thought about a little aromatherapy at your wedding? Research shows that certain scents can affect not only your mood but your health. For example, Dr. Andrew Weil found that the scent of essential oils from the tropical flower ylang ylang actually can help your pituitary gland secrete more endorphins, which make you happy. Oils from the marjoram plant, as another example, can boost your body’s production of serotonin, which helps you sleep and maintain positive moods.