caffeine
When consumption becomes high, some people may experience agitation, restlessness, tremors, or an increased feeling of nervousness .
Caffeine can also temporarily cause a rise in heart rate or the perception of a heartbeat. The response varies greatly depending on the amount consumed and the tolerance developed over time.
Those who drink coffee regularly may in fact react differently than those who consume it only occasionally.
Coffee can be addictive to caffeine
Drinking coffee daily can cause the body to develop a certain tolerance to caffeine. Over time, the same