Hypothesis: 5-12-10

It is hypothesized that caffeine will increase blood pressure, increase pupil dilation size, and increase reaction time. Guaranine will have similar effects as caffeine, but will be less effective at increasing blood pressure, pupil dilation, and reaction time. Since ginsenosides work longer and have less subtle effects, it will be less effective than both of the other stimulants at increasing blood pressure, pupil dilation, and reaction time.