Aerobic exercises should be done with a rhythm and at a moderate pace. Intensity refers to the force or the strength with which you carry out the exercise. It is always advisable to discuss out the intensity level with your doctor before starting any exercise programme.
The recommended rate for any exercise programme is 60% – 80% of the predicted maximum heart rate (Maximum heart rate = 220 – age). Individuals leading a sedentary lifestyle may benefit from an exercise programme beginning with a low intensity gradually increasing the exercise levels.