It is not D. 165 ( i know this is wrong but it wont let me submit without an explanation as to why it's wrong.)
Answer:they are unsafe and safe at the same time
Explanation:
Answer:
During exercise, increases in cardiac stroke volume and heart rate raise cardiac output, which coupled with a transient increase in systemic vascular resistance, elevate mean arterial blood pressure (60). However, long-term exercise can promote a net reduction in blood pressure at rest.
Explanation:
It irritates your lungs and throat and it ca cause inflammation
