produce increased blood… | 0.69 |
increase heart rate | 0.61 |
improve motivation | 0.16 |
neurotransmitter | 0.65 |
catecholamine | 0.41 |
proteins tryptophan | 0.34 |
produced | 0.68 |
released | 0.62 |
involved in maintaining… | 0.51 |
used to help alleviate … | 0.46 |