Please choose the correct ending to complete the given sentence: Health: [header] How to lose weight fast (for the elderly ) [title] Walk for 30 to 40 minutes each day to burn about 200-350 calories. [step] This helps drain the excess body fat. [substeps] Walking exercise is suitable for you because it does not require too much movement.

Ending1: Walking is both easy and good for tendons, bones, and your health. Walking helps to increase the body's metabolism and limits excessive accumulation of fat. Ending2: Take a walk every morning, a five hour walk on the treadmill or a run every day. This will help burn 20-300 calories and help with weight loss. Ending3: It's also a way to meet your healthy demands. [title] Do an activity that gets your blood flowing and improves your mood. Ending4: Improve your endurance and strength if you don't frequently take a walk. Don't be afraid to take a brisk walk or 3 shorter walks to stay active.

Answer format: ending1/ending2/ending3/ending4