Jordan Spieth

Jordan Spieth, who has used NeuroPeak Pro's breathing techniques to clear his mind on the course, swings during the first round of the Masters in Augusta on ...

“It's the difference of being at 150 and getting that down to like 120 or 110, as opposed to staying at 150 the whole time and just redlining it,” Bolhius says. In that half-minute, they won’t return all the way to their resting heart rate, of course, but they can conserve themselves. “When my heart rate got up, I was able it to control it and get it back down, based on breathing,” said DeChambeau, who was 4-over par after Thursday's first round of the Masters, compared to Spieth's 1-over. The NeuroPeak app has tutorial videos to help athletes learn to control their breathing, and premium packages include personal instruction. “The precision breathing practice is just like one would practice their golf swing or their putting stroke,’’ Matthews says. Before the golfer’s final round at the Players Championship, he did two breathing sessions a couple hours apart, registering scores of 93 and 95, before completing the tournament with a strong showing.