| does yawning cool the brain | 1.75 | 0.7 | 3644 | 27 | 15 |
| does yawning cool your brain | 0.08 | 0.3 | 3556 | 28 | 4 |
| yawning to cool down the brain | 0.1 | 0.7 | 701 | 30 | 36 |
| yawning cooling brain | 0.77 | 0.3 | 7134 | 21 | 23 |
| yawning cools the brain | 0.91 | 0.1 | 708 | 23 | 76 |
| how does yawning affect the brain | 0.3 | 0.6 | 2065 | 33 | 74 |
| why do we yawn brain | 0.94 | 0.8 | 9321 | 20 | 23 |
| does yawning mean your brain needs oxygen | 1.47 | 0.4 | 5271 | 41 | 10 |
| yawning oxygen to brain | 0.8 | 0.3 | 9826 | 23 | 87 |
| what part of the brain controls yawning | 1.22 | 0.6 | 5632 | 39 | 18 |
| yawning and the nervous system | 0.08 | 0.6 | 2530 | 30 | 25 |
| why does yawning feel good | 1.96 | 0.4 | 3484 | 26 | 17 |
| the science behind yawning | 1.32 | 0.4 | 4871 | 26 | 10 |
| why does the human body yawn | 0.28 | 0.9 | 41 | 28 | 4 |
| why does the body yawn | 1.76 | 0.1 | 4940 | 22 | 31 |
| yawning lack of oxygen to brain | 1.35 | 0.8 | 5196 | 31 | 6 |
| do scientists know why people yawn | 1.36 | 0.2 | 4521 | 34 | 76 |
| why do we yawn scientifically | 0.31 | 0.4 | 9580 | 29 | 89 |
| why do i yawn when nervous | 1.11 | 0.4 | 5057 | 26 | 21 |
| why do people yawn study | 1.08 | 0.2 | 3231 | 24 | 12 |
| why do neuro patients yawn | 1.68 | 0.1 | 1809 | 26 | 88 |
| why do we really yawn | 1.57 | 0.5 | 2295 | 21 | 28 |
| why do i yawn while studying | 1.13 | 0.3 | 8543 | 28 | 98 |
| why do humans yawn | 0.11 | 0.5 | 595 | 18 | 79 |
| google why do we yawn | 0.55 | 0.6 | 5899 | 21 | 62 |
