Why do energy drinks make me more jittery than coffee, even though the coffee I drink has significantly more caffeine?

Question

The title says it all really. If I drink a small Red Bull with 80 mg it makes me twitchy, but a 200 mg coffee barely even affects me.

In: Other

Answer 1

Because energy drinks also contain A LOT of sugar, a lot more than if you take your coffee with sugar which, in addition to caffeine, temporarily increase your energy levels before making you crash