Why does a dead body float on water but a living body doesnt?

Well both a dead body and living one floats on top of water. But the more you panic, the faster you will sink. If you were to stay calm and relax, you will have no problem with floating on top of water....

this is because of density. Anything less dense than water will float and anything more dense than water will sink. Our bodies(YOU CAN BE 600LBS) have a density less than water....so we will definitely float.

so if u find yourself "drowning", just stay calm and let human nature take it's course:)