Yawning while exercising?

JessieJames

does this happen to anyone else or does anyone know of a way to stop it like certain exercises... wen i have the motivation to exercise:rolleyes: i do aerobics, weights, running, cycling,anything really(not all in the same day of course) but i find myself constantly yawning throughout the period of exercise, i don't think its out of boardem what else can it be? i always knew it happened and never payed attention to it, i just thought it was normal..

cardio,shoot me

im pretty certain yawning is caused when ur body isnt getting enough oxygen from your regular breathing, which causes you to get tired, so in short, id say breath more , dont hold me to this as its junior cert science info XD

**Timbuk2**

This is just a guess, but from wikipedia (yes, I know)

Hypothesized causes of yawning

1. The deep inhalation during a yawn is a means of preventing alveolar collapse.
2. The deep inhalation while yawning stretches type II alveolar pneumocytes, which release the surfactant dipalmitoylphosphatidylcholine (DPPC) into the layer of fluid on the alveolar surface.
3. A means of cooling the brain.[7]
4. An action used as an unconscious communication of psychological decompression and stress after a state of high alert.
5. An excess of carbon dioxide and lack of oxygen in the blood. [1]
6. A way of displaying (or indicative of) apathy.
7. Tiredness.
8. A means of equalizing middle ear pressure.
9. Need of food or hunger/ appetite due to reduced level of glucose supplied to the brain.
10. To cool the body, such as after repeated exercise.
11. To moisten and lubricate the sclera and cornea of the eye, or stimulate the tear ducts.
12. To purge the lymphatic system before or after sleep

Possibly number 10, or maybe number 5, 3 or 4

arse..biscuits

I get the exact same thing, never bothered me though