In freediving, freefall is the part of the dive when you stop kicking and just sink down naturally. Here’s how it works: • At the start of the dive, you have to kick or pull yourself down because your body is still positively buoyant (it wants to float up) • As you go deeper, the pressure increases and compresses the air in your lungs, making you heavier. • At a certain depth — usually around 20 meters for most divers — your body becomes negatively buoyant. That means gravity starts pulling you