A 44-year-old member asked:
how does caffeine affect motor coordination?
1 doctor answer
Dr. William Goldie answered
47 years experience Pediatric Neurology
Depends on amount: Caffeine is a stimulant. Small amounts can improve alertness and motor function. High doses can cause tremors and excessive movements. Different people have different reactions. Usual coffee contains 120mg per cup. A large starbucks can have 320mg. A large cola has 80mg but energy drinks can have 250mg. Be careful how much you are taking.
Answered on Aug 31, 2012
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