Amental state other than an ordinary waking state, in which there are distinct changes in perception, emotion, memory, thinking, and the like, is called altered a. states of mental awareness b. alertness c. states of consciousness d. sentience

You can drink laxative, or  do this exercise when you are sitting in the bathroom on the toilet. to relieve  constipation  fast or in about 1 minute, pinch your nose after your usual exhalation. start holding your breath. but do not mouth breath during this just hold your breath.