Aromatherapy is the practice of using the natural oils extracted from flowers, bark, stems, leaves, roots or other parts of a plant to improve psychological and physical well-being. Breathing in the molecules of scent from certain plants can help people feel calmer (or more energetic), enhance mood, improve thinking and strengthen the immune system. This is both scientifically proven, and easy to prove to yourself! And of course there is also the fact that these herbs and essential oils just smell good. There are more ways than you might think to reap the benefits of aromatherapy.