Please choose the correct ending to complete the given sentence: Sports and Fitness: [header] How to exercise with asthma [title] Walk. [step] Walking is a great exercise for a large variety of people-including those with asthma. It's a low intensity activity that keeps your heart rate lower and doesn't cause deep or labored breathing.

Ending1: Walking regularly can make your asthma worse, though, so you could include other options : [substeps] Use a treadmill. If you can comfortably do in the space of your home, join a gym. Ending2: You don't necessarily have to : [substeps] Jog instead of run: try taking a brisk run per day. Walk at a jog, instead of going for a leisurely walk. Ending3: [substeps] Walk for 30 minutes on a daily basis for total support. The higher the number of steps, the more you burn, and the longer that exercise lasts. Ending4: [substeps] One study in particular showed that adults who walked three times a week showed improved fitness levels and had better control over their asthma after 12 weeks. Health and asthma professionals recommend doing a moderate to brisk walk a few times per week.

Answer format: ending1/ending2/ending3/ending4