You could probably buy a tester <span />
Target heart rate is defined as the minimum number of heartbeats in a given amount of time in order to reach the level of exertion necessary for cardiovascular fitness, specific to a person's age, gender, or physical fitness.
Answer:
Protraction is the anatomical term of motion for anterior movement of an anatomical part of the body forward. This can include the shoulders, jaw, pelvis, etc. It is the opposite of retraction.
Get a check up with his doctor!! His doctor can help guide him before he begins doing anything.
Well there are several terms... I could say BSI (Body Substance Isolation) or you could say standard precautions.