2007-10-15 01:44:13 · 4 answers · asked by Watch it bub! 3 in Science & Mathematics ➔ Medicine
To signal nonverbally that it is time to relax. "Extensive yawning among members of a baboon group signals the time to sleep, typically with the leader ('alpha male') ending the ritual with a giant yawn. For humans, yawning could be a remnant of evolution that communicates the desire to be left alone (or) the need for rest.
2007-10-15 02:37:23 · answer #1 · answered by Jeff M 2 · 0⤊ 0⤋
It's when your brain is telling you that you need more oxygen, but i think it's contagious because if i see someone yawn it make's me do it to.
2007-10-15 01:55:07 · answer #2 · answered by Gone 7 · 0⤊ 0⤋
No, yawning signifies lack of oxygen in your body.
2007-10-15 01:50:43 · answer #3 · answered by ron b 1 · 0⤊ 0⤋
No.
2007-10-15 18:32:09 · answer #4 · answered by J.SWAMY I ఇ జ స్వామి 7 · 0⤊ 0⤋