The simplest meditation.... Experiencing the breath

Sit or lie down in any position that is comfortable to you. Breathe only through the nose. Inhale slowly to a count of four, exhale slowly to a count of four. Keep your attention only on the breath going in and out. The only thought is of the breath! Experience the physical sensations of the air feeling cool on the inhalation, the downward movement of the diaphragm and the lungs expanding as they fill with air, the upward movement of the diaphragm forcing the air back out of the lungs, the lungs contracting as the air is released out. Experience the warmer air as it exits the nostrils. Try at first to do 5 breaths without external thoughts entering, then try up to 3 minutes, and then 5 or more minutes.