Breathing exercises that promote good health include breathing with the diaphragm instead of the chest to calm the sympathetic nervous system, and taking about seven deep breaths per minute to stimulate the vagus nerve, reports Women's Health magazine. Performing the exercises 10 minutes at a time, twice daily, is effective.
Breathing deeply and exhaling through the nose while releasing a high-pitched humming sound relieves anxiety, notes Women's Health magazine. The exercise causes the nose, chest and head to vibrate. Inhaling for four seconds, then exhaling while pretending to exhale into a straw for eight seconds is a stress-reducing exercise that helps curb overeating. The exercise increases heart rate variability, a factor that leads to more self-control of eating habits.