CM Classical Meditation Store

Yogic breathing such as gentle Ujjayi Pranayama (Victorious Breath) or practices that lengthen the exhalation relative to the inhalation can pretty quickly lead to parasympathetic dominance, and that's probably why the yawning occurs

When meditating deeply, you gradually loosen the restraints of self-centeredness. As you ease into the practice, your mind shifts to a more subtle kind of awareness. You become less self-conscious. Physical pain and emotional stressors can vanish for a time, and there can be a profound and abiding feeling of peace