We all know how it is after a stressful day. Your stomach is in knots, you feel exhausted, and your brain is still racing like an overheated engine. You’re super stressed. And stress, as we’ve said before, is very bad for brain health—for the health of your whole body, in fact. A warm, lavender-scented bath is a great way to unwind and relax your brain. It also promotes restful sleep. Lavender oil in a hot bath before bed and lavender oil on your pillow can be very relaxing. One study showed that smelling lavender oil decreased heart rate and blood pressure, making people feel more relaxed. Subjects also noted improved moods after smelling lavender oil.