In this selection of 4 CDs, the beneficial sound waves of Hemi-Sync can be incorporated into an exercise to improve breathing and restore strength to your lungs. Energy Walk - Obtain greater vitality and personal strength with a verbally guided inner journey to natural sources of energy.Lungs Repair and Maintenance - Learn to improve lung function with a simple method for use anywhere, anytime to ease breathing and respiratory discomfort.Restorative Sleep - Learn to increase your sleeping body's natural potential for self-healing. Use this simple method at bedtime to help you drift easily into deep slumber, maximize the restorative effect of sleep, and awake feeling well rested and refreshed. Tune-Up - Reinforce your body's natural ability to normalize its functioning. Speed recovery from illness, injury, or surgery.