"Steph Curry's second wind comes from his ability to rapidly lower his heart rate during short breaks, even in the middle of games," ESPN's David Fleming writes. "It's something he trains his body to do.
"Once he's out of breath at the end of most workouts, Curry lies on his back, and [personal trainer Brandon] Payne places sandbag weights below his rib cage in order to overload, and train, Curry's diaphragm.
"Through conditioning and breathing techniques like this, Curry can often coax his heart rate below 80 during one 90-second timeout."