A healthy weight is defined by your heart, not your appearance. Being physically active and maintaining a healthy weight might lower the risk of cancers of the breast, colon, kidney, lung and prostate. If you want an amount of activity to use as a target, as a general goal, include at least 30 minutes of physical activity in your day. At least 150 minutes a week of moderate aerobic activity or 75 minutes a week of vigorous aerobic physical activity is ideal.
