1 Hoarseness is an abnormal change in the voice. 2  The most common cause of hoarseness is acute laryngitis.  The underlying cause of hoarseness can usually be diagnosed by a health care professional based on the patient's history and physical exam.
The effects usually stop after 3 or 4 hours. Smoking pot can increase your heart rate by as much as two times for up to 3 hours. Thatâs why some people have a heart attack right after they use marijuana. It can increase bleeding, lower blood pressure, and affect your blood sugar, too.
Report Abuse. Marijuana is harmful in general. Yes it does effect your workout. Its hard on your body when you smoke because your body is already trying to get rid of the harmful things that your friend is smoking into it; while trying to 'work out' at the same time.