explain_with_science on Instagram: "Olympic swimmers use artificial pool currents to train because the moving water creates constant resistance, forcing the body to work harder. These controlled currents help improve speed, stamina, body balance, and swimming technique. The reason this method works so well is that swimmers can repeat perfect strokes while the water flow exposes mistakes instantly — making training more efficient and precise. . Via :@clem_secchi . All credit goes to the respectiv