Can aerobic training with a heart rate monitor help my heart?

The heart and entire cardiovascular system is an important part of the aerobic system. They work together, so when aerobic function improves, heart health follows. An example is the fact that aerobic muscle fibers (but not anaerobic muscle fibers) are endowed with significant blood vessels, helping to dramatically improve circulation throughout the body, among other health factors. The aerobic system also improves immunity and hormonal function, and can help the anaerobic power muscle perform when they are needed.