Please choose the correct ending to complete the given sentence: Health: [header] How to stop vomiting when you have the stomach flu [title] Drink a small amount of water. [step] Vomiting can cause dehydration; because of this, you need to replace the fluid you have lost with water. Keep in mind that you should only take small sips of water because if you gulp down a big glass and expand your irritated stomach, you could end up vomiting again.

Ending1: [substeps] Take small sips of water every 15 minutes after you have vomited. Do this for three or four hours to hydrate yourself. Ending2: This is especially important if you have your stomach flu or you have had one recently. Your body needs fluid to stay hydrated, so immediately take a small sip of water and hold it between your middle and index fingers. Ending3: Hold the glass of water in your mouth. Close your mouth and sip some of it until the water washes away. Ending4: [substeps] To help compensate for thirst, drink water if you're sick. If your nausea keeps you from swallowing liquids, try flavored water or herbal teas as well.

Answer format: ending1/ending2/ending3/ending4