Ch 12 Floating principles
Once you learn how to apply Archimedes Principle of physics you can understand why you need to inflate your lungs fully to float. Then when you swim you can keep floating well by only exhaling or replacing 15% of your air supply with each breath. You also have to learn to float level like an air mattress on water. Otherwise when your 14 lb. head goes up your feet and legs have to go down.
Most people think of only one kind of floating in the face down position. Actually there are seven kinds of floating positions and another five kinds of skills to improve your floating ability. What may not seem obvious to you but you should learn to improve your overall swimming skills are: Face float, Turtle float, Survival float, Sea otter float, Salt Lake float, Back float, and Pencil float...