Describe one step in the digestive system process.

One step in the digestive system process is chewing. During chewing, salivary glands next to the jaw release saliva, which decomposes food, and teeth are used to tear food into smaller pieces. This breaks the food down into bits that are more easily swallowed and processed by the rest of the digestive system.

No it doesn’t hurt depending on how many fingers they use

Because without physical activity, the body has extra "energy" if you will, and so when it is time for bed you are not tired, so you end up staying up all night. also there is probably an effect on your internal clock, which messes with your melatonin production which goes hand in hand with your sleep cycle