<span>Since I do not know your maximum heartrate ill give you the standard. For vigorous-intensity physical activity, a person's target heart rate should be 70 to 85% of his or her maximum heart rate.</span>
Answer: Maintain a positive attitude, accept that you can not control everything, do your best, learn what triggers your anxiety, drink water, take a short break.
Explanation:
Hope it helped !
It enters the heart via the pulmonary veins
