| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| what are the biological functions of sleep | 0.08 | 0.7 | 6492 | 3 | 42 |
| what | 1.31 | 0.4 | 2721 | 48 | 4 |
| are | 1.66 | 0.4 | 1840 | 25 | 3 |
| the | 1.45 | 0.3 | 530 | 47 | 3 |
| biological | 0.94 | 0.9 | 7056 | 15 | 10 |
| functions | 0.03 | 0.1 | 8977 | 80 | 9 |
| of | 0.44 | 0.6 | 3710 | 30 | 2 |
| sleep | 1.94 | 0.6 | 4528 | 46 | 5 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| what are the biological functions of sleep | 0.85 | 0.9 | 9079 | 10 |
| list four biological functions of sleep | 1.2 | 0.9 | 1041 | 77 |
| biological functions of sleep | 0.17 | 0.4 | 9410 | 28 |
| what is the function of sleep | 1.59 | 0.2 | 5896 | 26 |
| list the functions of sleep | 1.11 | 0.7 | 2926 | 2 |
| physiological functions of sleep | 1.11 | 0.5 | 3701 | 28 |
| what are sleep's functions | 0.61 | 0.2 | 4706 | 41 |
| what is the role of sleep | 1.37 | 0.5 | 2963 | 66 |
| proposed functions of sleep | 0.13 | 0.7 | 6870 | 40 |
| functions of sleep psychology | 0.61 | 0.1 | 6267 | 71 |
| biological benefits of sleep | 1.34 | 0.1 | 9078 | 90 |
| body functions during sleep | 0.08 | 0.4 | 1414 | 30 |
| the biology of sleep | 1.55 | 0.4 | 1516 | 67 |
| what does sleep provide | 1.06 | 0.3 | 152 | 97 |
