R- Respiro


 * Breath
 * Shallow breathing - a type of breathing that is mutually exclusive to diaphragmatic breathing and is associated with multiple anxiety disorders
 * Circular breathing
 * Pranayama - a traditional Yogic practice of slowing and extending the breaths, used during meditation
 * Kussmaul breathing

(all wiki pages)
 * Apnea (suspension of breathing)
 * Diaphragmatic breathing
 * Kussmaul breathing
 * Agonal breathing
 * Cheyne-Stokes respiration
 * Biot's respiration
 * Mouth breathing
 * Nose breathing
 * Respiratory rate
 * Buteyko method