By simply focusing your attention on your breathing and without doing anything to change it, you can move in the direction of relaxation.â. This same philosophy is used in his well-known âThe 4-7-8 Breathing Exercise,â also called âThe Relaxing Breath,â which promotes better sleep.
A cave is a hollow place in the ground, specifically a natural underground space large enough for a human to enter. Caves form naturally by the weathering of rock and often extend deep underground. The word cave can also refer to much smaller openings such as sea caves, rock shelters, and grottos, though strictly speaking a cave is exogene, meaning it is deeper than its opening is wide, and a rock shelter is endogene. A cavern is a specific type of cave, naturally formed in soluble rock with the
Underground caves and caverns represent some of the most unique, fascinating (and cool) features of the North American deserts. Many varieties of caves occur in all of the deserts of the Southwest, but are most common in limestone mountains where conifers abound. Such is the case with the two of the most famous caves known in the Desert Southwest, Carlsbad Caverns in southern New Mexico and Lehman Caves in eastern Nevada. These limestone caverns are now protected and managed by the National Park Service.