Please choose the correct ending to complete the given sentence: Sports and Fitness: [header] How to be fit and sexy [title] Get regular aerobic exercise. [step] Healthy adults should get at least 150 minutes of moderate aerobic activity or 75 minutes of vigorous aerobic activity a week. Break your exercise up into shorter increments across the week.

Ending1: Talk to your doctor or a fitness tracker to see if your daily exercise program can benefit you. [substeps] For example, most health professionals recommend 30 minutes of moderate aerobic activity and 150 minutes of vigorous aerobic activity a week. Ending2: Aerobic exercise makes you altogether healthier. It helps you maintain a healthy weight, lowers your risk of heart disease, and lowers your risk of contracting viral illnesses. Ending3: [substeps] For example, you could do 30 minutes of moderate aerobic exercise one week and a 15 minute aerobic activity the next week. For instance, you could walk around the block for 4 hours a day or jog for 15 minutes per day. Ending4: [substeps] If you don't exercise to lose weight or don't want to take time off from work, make an effort to try some aerobic activity on a regular basis. For example, you can go for a run, run around your neighborhood, or jog on the treadmill.

Answer format: ending1/ending2/ending3/ending4