It is best to practice meditation between 11pm and 1am (local time). Refrain from practicing meditation between 3pm and 10pm. Rinse your mouth and wash your face. Turn the light off, and sit facing southward. Sit cross-legged on a cushion to keep your spine straight. Avoid direct contact with the ground. Maintain the following positions from the beginning to the end of the meditation session. Curl the tongue up, touching the line between the up- per gum and the front teeth, incisors against incisors, mouth and eyes closed while focusing forward from your frontal psychic center. Then do these spiritual exercises in the following order: