How does caffine affect your heart rate?

Answer 1

Caffeine--the drug that gives coffee and cola its kick--has a number of physiological effects. At the cellular level, caffeine blocks the action of a chemical called phosphodiesterase (PDE). Inside cells, PDE normally breaks down the second chemical messenger cyclic adenosine monophosphate (cAMP). Many hormones and neurotransmitters cannot cross the cell membrane, and so they exert their actions indirectly via such second messengers; when they bind to a receptor on the surface of a cell, it initiates a chemical chain reaction called an enzyme cascade that results in the formation of second messenger chemicals.

Answer 2

Caffeine increases the heart rate thereby causing one's nervous system to increase sensitivity and sometimes effectiveness. However, when pushed to this limit too fast or too long, the heart can become tired, just like any other muscle. Caffeine is only good in moderation.

Answer 3

Caffeine is a natural (and now synthetic) organic stimulant. Stimulants increase heart rate and decrease nervous system reaction time.

Answer 4

Caffeine increases pulse rate

Answer 5

How does caffeine effects the heart rate?