Please choose the correct ending to complete the given sentence: Health: [header] How to produce saliva [title] Chew gum. [step] One of the quickest and easiest ways to produce more saliva is to pop a stick of gum in your mouth and chew it. The chewing action tells your body that you are eating and that you need saliva to process your food.

Ending1: For example, if you eat a potato or a peanut, you would suck on your gum slowly while chewing. Having the food on your tongue stimulates saliva production. Ending2: It is part of forming saliva and is easier to find throughout the day. [substeps] Chewing gum is also known as " saliva dyeing " in the united states. Ending3: [substeps] Do not chew gum when you are preparing a meal or training your dog. You could cause serious harm to your dog's health. Ending4: [substeps] It's a good idea to chew sugar-free gum if you have a problem producing saliva. The health of your teeth is already at risk from not having enough saliva, so introducing a bunch of sugar into your mouth potentially adds to the problem.

Answer format: ending1/ending2/ending3/ending4