Give yourself some breathing room in order to fully know what your body needs this at this time. By "breathing room," I mean aerobic exercise. Yoga is a great example of something that gives you the skills to relax and deepen your breath. This is the main benefit of yoga and needs to be understood by those who practice it. Rather than focusing on "tightening your butt," let yoga loosen your tight grip on reality and through expanding your lung capacity and give you important perspective.