So I came across this article yesterday that says Steph Curry can intentionally lower his heart rate down to 80bpm during a 90s timeout, and that it was achieved through training.
"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."
I know El Guerrouj was famous for being able to lower his heart rate substantially in between intervals. Is this something that could be implemented in training and help improve my running?