This strategy reduces the chances of overuse injuries, imposes a more balanced conditioning stimulus and may enhance enjoyment. Although aerobic exercise is not technique or concentration intensive, proper technique is still very important to optimize your efficiency and prevent injuries. Heart rate monitors are also a good way to observe your beats per minute to keep the exercise in the proper target zone .
Moderate intensity is almost always appropriate and always more enjoyable.
2 to 7 days a week. The more often you perform aerobic exercise the more important it is to cross train as discussed above. It is always important to gradually increase your duration, intensity and frequency. It is especially important if you are deconditioned, overweight, elderly or are rehabilitating from an injury or illness. If in doubt, go easier, shorter, slower and enjoy yourself.