Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to stay cool at work [title] Drink 8 glasses of cold water per day. [step] Have a reusable water bottle that you can refill with cold water throughout the day. Not only will water keep you cool throughout the day, it can keep you hydrated and avoid fatigue throughout the day.

Ending1: If you are working during the holidays, cut back on how much alcohol you drink and stick to water. [substeps] Cold water can sting and raise your blood pressure. Ending2: If you are thirsty during the day, check your water bottle to make sure it's empty. [substeps] Dehydration can also interfere with your mood because of how dry the environment is. Ending3: [substeps] Avoid caffeinated drinks like coffee or tea. The caffeine increases blood flow and raises body temperature, regardless of if the drink is hot or cold. Ending4: [substeps] Make sure to drink your water shots less than 6.5 to 7.5 glasses per day. You can also calculate your water intake by measuring out 3 ounces on a paper cup.

Answer format: ending1/ending2/ending3/ending4