Pools measuring in yards are typically 25 yards long, whereas meter pools are 50 meters long. Yards and meters are the standard pool measures. Long-distance swimmers choose 50-meter or even 100-meter pools. It's more enjoyable to swim kilometers when you can flip turn less. The length of a pool should be equal to the sprint distance you wish to swim. For example, if you plan to swim across the pool, the pool should be 200 meters long. If you only plan to swim within the lane, it can be shorter. As far as depth is concerned, any body of water will have a maximum and minimum depth. Pools usually range from 0.5 meters to 1.5 meters deep. Anything deeper than this and you'll need a diving board or other means of reaching the bottom. There are two types of strokes used in swimming: freestyle and butterfly. In both cases, you should start with your arms outstretched and face forward. For freestyle, you should glide through the water using only your legs. Butterfly involves moving your arms in a back and forth motion. There are several variations of butterfly, such as flying and reverse flying. After learning how to swim, people often ask about the best stroke for them. This depends on many factors such as size, strength, and mobility.