The simplest way to gauge your hydration level is by checking the color of your urine. If it’s dark and with a strong odor, you are dehydrated and should increase your daily water intake. If the urine is pale yellow, you are drinking enough water. Another way to tell that you are hydrated is if you are not thirsty. However, this doesn't give you the ticket to start slacking your water intake. Do so, and you'll eventually get thirsty from dehydration. You can also tell whether you are hydrated by checking your skin's elasticity. If you pinch your skin and it snaps back immediately, you are well hydrated.