Would doing aerobic exercises above my target heart rate be better than at it?

Not necessarily. Consistently dong exercise above your thr rate means you may bumping up against your maximal health rate. The thr is a safe and good level to exercise at without any risk to your heart.

Related Questions

Please help me with an easy way to stay within target heart rate?

Target zones. Review the target zones of aerobic exercise. They are base on your maximal heart rate that is base in your age. Rough is 220-age. Lower the zone more fat burning and higher the zone more endurance. Buy a watch that measure your heart rate and go and have fun. Read more...