In fact, pairing a beginner inversion with simply focusing on your posture throughout the day may be just enough to brighten your outlook. (Go to Well+Good for Cruikshank’s easy, 2-step guide to putting pep back in your step.) “Dolphin pose and postural practices will boost your mood by helping with circulation,” she says. “Try it when you’re feeling under the weather or not having that enthusiasm you might normally have.” (Of course, if your sadness is more serious, professional help is the way to go.)