AA is generally the abbreviation for Associate of Arts degree. This is the degree given by many two-year colleges, often called Community Colleges (which used to be called Junior Colleges). Some also award the AS-- Associate in Science degree. Typically, an Associate's degree is the equivalent of a year, or in some cases a year and a half, of courses at a four-year college, and there are many students who transfer their Associate's degree credits so that they can complete a four-year degree.
Although it may seem difficult, lowering your breathing speed will help to lower your heart rate. Take a breath for 5-8 seconds, hold it for 3-5 seconds, and then exhale slowly for a count of 5-8 seconds.
According to the American Heart Association, a normal resting heart rate is 60 to 80 beats a minute, or about one beat per second. Well-trained athletes sometimes have resting heart rates as low as 40 beats per minute, but for those who exercise only casually or not at all, a heart rate this low is not normal. It is best to take your heart rate before you get out of bed after a night of sound sleep.