Olympic swimmers train in pools engineered to replicate real race conditions. Coaches adjust the current speed to match a target pace or push beyond it to build endurance and power. Flow changes during practice prepare athletes for sudden surges and fast finishes. Turbulence is introduced to recreate the unpredictable pull of open water, while resistance features strengthen every stroke against uneven currents. The water temperature is also set to mirror the event, whether it is a cold triathlon