why we will yarn when we are sleepy
Answers
Answered by
0
It is due to pineal gland which releases hormones which control our timing mechanism such as sleeping. But when we do not follow our shedule, reflex actions like yawning occurs...
Hope you like it...
Show your support by marking it brainliest...
Hope you like it...
Show your support by marking it brainliest...
Similar questions