| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| englander 21st century sleep system | 0.22 | 0.6 | 5328 | 95 |
| sleep in early modern england | 1.5 | 0.6 | 1366 | 18 |
| sleeping well in the early modern world | 0.25 | 0.6 | 8937 | 85 |
| sleeping in middle ages | 1.64 | 0.6 | 3161 | 47 |
| sleep patterns in middle ages | 0.28 | 0.7 | 162 | 34 |
| medieval first sleep and second sleep | 1.53 | 0.1 | 993 | 16 |
| time for sleep uk | 1.96 | 0.7 | 3084 | 80 |
| the history of sleep | 1.05 | 0.9 | 6273 | 71 |
| sleep in old english | 1.51 | 0.3 | 5752 | 3 |
| how long did medieval people sleep | 1.88 | 0.6 | 5638 | 38 |
| how did early humans sleep | 1.56 | 0.5 | 4050 | 85 |
| how many hours sleep by age uk | 1.68 | 0.9 | 9423 | 35 |
| sleep patterns in history | 1.39 | 0.3 | 9530 | 18 |
| medieval dynasty sleep in town | 1.68 | 1 | 8238 | 30 |
| great british sleep survey | 1.49 | 0.7 | 7051 | 75 |
| where did they sleep | 1.91 | 0.4 | 4577 | 55 |
| why is sleep important uk | 1.83 | 0.9 | 7456 | 42 |
| british sleep society uk | 1.07 | 1 | 2348 | 29 |
| two sleeps middle ages | 1.65 | 0.2 | 9593 | 54 |
| nhs sleep by age | 0.89 | 0.8 | 5441 | 46 |
| medieval dynasty how to sleep | 1.95 | 0.1 | 3179 | 69 |
