In most biological nomenclature, a scale (Greek Î»ÎµÏÎ¯Ï lepis, Latin squama) is a small rigid plate that grows out of an animal 's skin to provide protection.
What Is a Normal Heart Rate? Whatâs normal depends on your age and activity level, but generally a resting heart rate of 60-80 beats per minute (BPM) is considered to be in the normal range. If you are an athlete, a normal resting heart rate can be as low as 40 BPM.
For most adults, normal heart rate is 60 to 80 BPM. Well-trained athletes can have a normal heart rate of 40 to 60 BPM.