Duration of exercise

The Art of Healthy Lifestyles
The duration of exercise, is refers to the time people spend exercising. If in cardiovascular session, not including the warm-up and cool-down, should vary from 20-60 minutes to gain significant cardio-respiratory and fat burning-benefits. Each time people do cardiovascular exercise, at least try to do 20minutes or more. Of course, the longer go, the more calories and fat being burn and the better condition of cardiovascular system.

It is important to gradually increase before increase the intensity, that is when beginning a walking exercise , to be more concern with increasing numbers ofminutes of the exercise before increase the intensity, by increase speed, by walking hilly train.
The Art of Healthy Lifestyles