| | Conditions Treatments | Cardiovascular Disease What is the normal heart rate of a 12 year old girl? Normal heart rate for a 12 year old girl: 60-100 beats per minute (bpm) while resting 130-170 bpm during exercise Cardiovascular Disease - Related Articles Is developmental disability a form of retardation? Side Effects of Cha De Bugre What large complex single celled organism causes African sleeping sickness? Osteoporosis Herbal Remedies How to Disinfect Golden Books for Kids New Treatment for Gullet Cancer How to Control Hot Flashes