Probably a low tolerance to caffeine, were you perspiring severely or having shortness of breath as well? I have done my share of certain chemical compounds and never really found the caffeine to interact with me in a way that was seemingly detrimental.
Funny fact, they say if you ingest caffeine before a nap, when you wake up you'll feel 100% and not groggy whatsoever. Tried it one day, actually worked.
Funny fact, they say if you ingest caffeine before a nap, when you wake up you'll feel 100% and not groggy whatsoever. Tried it one day, actually worked.