Please choose the correct ending to complete the given sentence: Sports and Fitness: [header] How to avoid caffeine overdose for athletes [title] Drink plenty of water before you exercise. [step] The amount of water you need varies from person to person, but generally you want to maintain consistent hydration to avoid becoming dehydrated by exercise, especially if you sweat a lot. [substeps] The easiest way to determine whether you're well hydrated is to look at the color of your urine.

Ending1: Light pink urine or muddy urine generally indicates dehydration. Green urine, even if it's light pink, indicates faintness. Ending2: There should be two colors: warm, cool, and dry. Cool urine indicates alcohol and is a good sign that you're dehydrated. Ending3: To do this, take a photo of your urine. If it looks discolored or has a yellow tint to it, you're well hydrated. Ending4: If it's clear, you're well hydrated. The darker your urine, the more water you need to drink.

Answer format: ending1/ending2/ending3/ending4