Q: What is the best exercise that is safe and sustainable to loose weight?

A:The best exercise that is sustainable and safe to loose weight is aerobic exercises. Aerobic exercises usually involve vigorous exercises sustained over a period of several minutes and it's effect is to increase the efficiency of the lungs, heart and blood circulation, which are collectively known as the aerobic system. Short and sharp bursts of activity which rely on the body's reserves of oxygen do not produce a similar improvement. Exercises should increase strength and mobility and also aid relaxation. You can choose walking, swimming, bicycling as per your fitness level and increase gradually.