Recent News: The Deep. Natalie Farrow was recently cast on Freeform's new pilot The Deep. They are waiting to see if it get's picked up, Catch Natalie Farrow's interview, talking all things iZombie and what it was like to play Ginger.
Caffeine can increase blood pressure; long term consumption at sufficiently high doses has been associated with chronic arterial stiffness. Blood pressure increases are mediated by adenosine receptor antagonism. Caffeine can cause vasoconstriction. It is unclear if caffeine causes increased heart rate as a side effect.
Caffeine is a well-established ergogenic aid/cognitive enhancer, and also happens to be the most widely consumed psychoactive substance in the world. Caffeine causes an increase in catecholamines (adrenaline, noradrenaline, and dopamine), resulting in increased alertness, focus, and perceived energy.