Please choose the correct ending to complete the given sentence: Health: [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.

Ending1: Aim for 1 to 2 days of aerobic exercise per week. Activities like walking, jogging, biking, hiking, and running have all been shown to improve your women's health, which causes reduced risk for breast cancer. Ending2: [substeps] Always include at least 30 minutes of aerobic activity each week. Some examples include running, jogging, cycling, weight lifting, hiking, and swimming. Ending3: Try to incorporate aerobic exercise into your everyday workout regimen, such as listening to music or simply dancing. [substeps] If you find it difficult to increase aerobic activity, try looking into alternative ways to exercise. Ending4: [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.

Answer format: ending1/ending2/ending3/ending4