| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| proposed functions of sleep | 1.53 | 0.3 | 2543 | 4 | 27 |
| proposed | 0.49 | 1 | 7044 | 37 | 8 |
| functions | 0.92 | 0.3 | 3435 | 79 | 9 |
| of | 0.77 | 0.5 | 5776 | 82 | 2 |
| sleep | 0.73 | 0.7 | 1867 | 39 | 5 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| proposed functions of sleep | 0.96 | 0.4 | 8102 | 99 |
| the functions of sleep | 0.9 | 0.1 | 8251 | 81 |
| list the functions of sleep | 0.9 | 0.9 | 513 | 42 |
| what are the biological functions of sleep | 0.7 | 0.3 | 6132 | 8 |
| physiological functions of sleep | 0.41 | 0.9 | 2497 | 49 |
| functions of sleep psychology | 1.37 | 0.5 | 2833 | 14 |
| what are sleep's functions | 1.16 | 0.5 | 5992 | 70 |
| the role of sleep | 1.41 | 0.9 | 4594 | 18 |
| list three functions that sleep performs | 1.11 | 0.3 | 1065 | 8 |
| what theories explain the function of sleep | 0.61 | 0.1 | 9908 | 73 |
| the purpose of sleep | 1.84 | 0.7 | 4118 | 1 |
| theories explaining the purpose of sleep | 0.49 | 0.2 | 5231 | 73 |
| sleep is a biological function | 1.9 | 0.6 | 4781 | 64 |
| function of sleep psychology | 0.84 | 0.4 | 5429 | 8 |
| what are the functions of sleep psychology | 1.12 | 0.8 | 3863 | 71 |
| what are the functions of sleep | 0.57 | 0.8 | 4802 | 50 |
| what is the importance of sleep psychology | 0.64 | 0.6 | 1391 | 40 |
