[header] How to decrease your breast cancer risk [title] Increase your exercise. [step] Getting at least four hours of aerobic exercise per week has been correlated with a decreased risk of breast cancer. Aerobic exercise is anything that elevates your heart rate, such as brisk walking, jogging, swimming, or riding a bike. 
[substeps] Exercise has the additional benefit of helping you to lose weight and/or maintain a healthy weight. Being overweight is correlated to an increased risk of breast cancer.