Walking is one of the oldest forms of locomotion. Because of the low amount of impact and the caloric expenditure which comes from use of oxygen, walking has been hailed as the number one form of exercise. Because of many recently released studies, we know that exercise does not have to be strenuous to have benefits. However, it should be consistent. Even with speed walking, one foot is constantly in contact with the ground, providing support, and limiting impact.
Impact is often responsible for causing injuries from running and many other forms of exercise.
Therefore, walking has limited risks for the joints and muscles. Special locations for this form of exercise are limited. You can walk almost anywhere. Safe neighborhoods, shopping malls, high school tracks, and fitness centers all provide an adequate safe environment for this exercise. You should already have the equipment.