The sport that utilizes chalk to enhance grip for athletes is weightlifting. Chalk, usually in powdered form, is applied to the hands to reduce moisture and improve grip on the barbell or weights, minimizing slippage during lifts. This practice not only aids performance but also helps prevent injuries by providing better control over the weights being lifted. Many other sports also use chalk, such as gymnastics and rock climbing, but it is particularly critical in weightlifting competitions.