Dehydration happens when your body gets rid of more fluids, usually through sweating or going to the bathroom more than normal, than it absorbs. Drinking too little water during exercise, hot weather, or daily activities can also cause the body to use up its stored water.
Nocturia is defined as the excessive need to get up and urinate during the night. 1  You may find yourself using the bathroom several times per night and this can be disruptive to your sleep. It is generally considered to be abnormal to wake to urinate when it occurs more than once at night.
Depending on your situation you might want to know when to go to sleep in order to wake up at a specified time ( in this case go for Scenario 1 ) , you might want to determine the best times to wake up after having gone to sleep at a specified time ( in this case go for Scenario 2 ) , you might want to simply know the best times to wake up if you ...