| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| caffeine effect on heart | 1.21 | 0.4 | 1593 | 6 | 24 |
| caffeine | 0.01 | 0.5 | 6280 | 58 | 8 |
| effect | 1.04 | 0.9 | 2914 | 4 | 6 |
| on | 0.02 | 0.1 | 7431 | 41 | 2 |
| heart | 0.54 | 0.6 | 4830 | 47 | 5 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| caffeine effect on heart rate | 1.9 | 0.2 | 7288 | 92 |
| caffeine effect on heart | 1.68 | 0.6 | 859 | 45 |
| caffeine effect on heart rhythm | 0.08 | 0.4 | 9460 | 35 |
| caffeine effect on heart rate graph | 1.47 | 0.4 | 5526 | 91 |
| effect of caffeine on daphnia heart rate | 0.78 | 0.2 | 500 | 27 |
| effect of caffeine on heart rate experiment | 0.64 | 0.9 | 1847 | 28 |
| what effect does caffeine have on the heart | 1.31 | 0.7 | 866 | 24 |
| what is the effect of caffeine on heart rate | 0.86 | 0.4 | 5012 | 37 |
