<human>: Is it okay to ride a roller coaster if I get occasional pvcs. I have never been able to feel them before and have never felt any discomfort. As a separate question would it be fatal or harmful to ride a roller coaster with the same condition under the influence of marijauna
<bot>: HiT hanks for using Chat Doctor At low or moderate doses, cannabis leads to an increase in sympathetic activity and a reduction in parasympathetic activity, producing a tachycardia and increase in cardiac output. Chances of PVC, arrhythmia, sinus bradycardia, second-degree atrioventricular block and atrial fibrillation etc. could be possible with cannabis use. In your case, PVC could be due to cannabis. Thanks