Sense and senses

What sense does it make to drink a tisana before going to bed, the one that's supposed to make you sleep better and rest better during the night, only to wake up at 5 am because you need to go to the toilet (all that liquid you drank just before going to bed °__°), and you can't go to sleep again until about 15 minutes before your alarm clock goes off?And the little sweet monster senses with her