940KiB, 2277x2824, bubbles.jpg View SameGoogleiqdbSauceNAO Cardio Anonymous Thu 17 Mar 06:12:43 2022 No.14310783 ViewReplyOriginalReport Quoted By: >>14310816 Why is raising one's heart rate through cardiovascular exercise protective, while raising it through other means, like drugs or fear, is adversely stressful?
