More than two decades after he radically transformed big-wave surfing, Laird Hamilton is still a dominant force in the sport. As detailed in the new documentary Take Every Wave, Hamilton is again pushing the edge with his new obsession, hydrofoil surfing. His wife, Gabby Reece, is a former professional volleyball player, model, author, and currently the host of the NBC reality show Strong. At their home in Malibu, Hamilton and Reece have created an elite training boot camp where they torture themselves daily, run extreme pool training classes, and constantly experiment with new approaches to exercise and nutrition. In this first installment of a four-part look at the science of performance, Outside editor Christopher Keyes pays the super couple a visit to try and understand the methods behind what sure looks like total madness.