Seems like you can float on your back forever, without really getting tired. When people drown in lakes or oceans, why can’t they just float until someone rescues them? I get it if you’re wearing clothes heavy with water, but if you were already swimming, or at least dressed for it…?
In: 851
Because while it seems easy, its not as easy as just lying down. You will need to constantly exert at list a bit of force to keep yourself in the correct position. You can easily test this by trying to float for a few hours. It will get tiring pretty fast.
Combine that with hypothermia due to water constantly sapping away your body heat, and you will get exhausted pretty fast.
Latest Answers