2006-06-29 09:48:41 · 6 answers · asked by Anonymous in Health ➔ Other - Health
coz we need more oxigen
2006-06-29 09:50:51 · answer #1 · answered by ive_bive 4 · 0⤊ 0⤋
Yawning is a method for communicating to other individuals your physiological state of being tired. It is believed that the yawn was used to signal to the pack or tribe that it was time to sleep. As humans have evolved, yawning has lost its significance.
2006-06-29 17:11:04 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Simply because we are bored or fatigued. Yawning makes us more alert because of the slow inhalation of oxygen.
2006-06-29 16:54:31 · answer #3 · answered by Jessica G 2 · 0⤊ 0⤋
oxygen to the brain
2006-06-29 17:43:03 · answer #4 · answered by PAT 2 · 0⤊ 0⤋
due to lack of oxygen
2006-06-29 16:53:42 · answer #5 · answered by shelleigh 3 · 0⤊ 0⤋
your brain is lacking oxygen
2006-06-29 16:51:34 · answer #6 · answered by Miss.Renee 1 · 0⤊ 0⤋