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.
A heart rate of less than 60 beats per minute (BPM) in adults is called bradycardia. What's too slow for you may depend on your age and physical condition. Physically active adults (and athletes) often have a resting heart rate slower than 60 BPM but it doesn't cause problems and is normal for them. Your heart rate may fall below 60 BPM during deep sleep. Elderly people are more prone to problems with a slow heart rate.