Your daily exercise session should consist of five to 10 minutes of warming up with gentle exercise such as slow walking, followed by at least 20 minutes of aerobic exercise and a five minute cool-down of slow movement. Start slowly if you've been inactive. Taking three 10-minute brisk walks will give you 30 minutes of exercise every day. As you become fit, increase the time and intensity of your walks.
Weight gain does not happen overnight, and neither does weight loss. Patience, discipline, and motivation are the keys moving in a positive direction to a healthier lifestyle.