stevesmi Head Mod Elite Moderator Apr 3, 2013 #11 lets not bump old threads. start your own. caffeine is a drug... stop taking it and you can get withdrawal issues.. the stuff in preworkouts can cause your heart rate to jump as well as bp which can lead to headaches. hope this helps
lets not bump old threads. start your own. caffeine is a drug... stop taking it and you can get withdrawal issues.. the stuff in preworkouts can cause your heart rate to jump as well as bp which can lead to headaches. hope this helps
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