Meditation Tips for Beginners. 1  Guided meditation MP3s or CDs as meditation tools. For beginners, audio guided meditations provide step-by-step instructions that help to introduce meditation in an easy and non-intimidating way. 2  Aim to have the length of your exhalations as long, if not longer, than your inhalations.
While air can be compressed more easily than water, freely flowing air acts much like waterâat least at relatively low speeds. So when you squeeze a stream of air, two things happen. The air speeds up, and as it speeds up, its pressureâthe force of the air pressing against the side of the objectâgoes down. When the air slows back down, its pressure goes back up. Why does the air speed up? Because of conservation of mass, which states that mass is neither created nor destroyed, no matter what physical changes may take place.
The reason is the lower atmospheric pressure. due to a thinner blanket of air above. At sea level, the air presses on a square. inch of surface with 14.7 pounds pressure; at 5,000 feet with 12.3 pounds. pressure; and at 10,000 feet with only 10.2 pounds pressure -- a decrease. of about 1/2 pound per 1,000 feet.