If you're swimming backstroke, you know how many strokes (arm rotations) to take from the flag before flipping over. It took me approximately 4 strokes until I flipped over. For any of the other strokes, you can see the bottom of the pool's wall or line. When you reach this point, you should be ready to flip over. Swimming is also known as a long-distance exercise because it requires large amounts of energy to swim fast for a long time. Since humans don't have motors in our limbs like we do in cars, we need to stop periodically to breathe and recover our energy. In addition, there are several parts of the body that work hard while swimming: your arms and legs during each stroke cycle, and your heart during rest periods. Flipping over is an important part of the swimming workout because it allows water to pass through your nose and mouth, helping you to breathe more easily and reducing the risk of drowning. Additionally, it gives your muscles a break from holding their current position for so long, which helps them stay strong and avoid injury. There are two ways to flip over in swimming: voluntarily or involuntarily. If you try to flip over by yourself using only your body, you will fail because you cannot generate enough force with your arms and legs alone. However, if someone else forces you under water and lets you go, then you will be able to flip over successfully without help.