a result, he developed a deep understanding of its shifting patterns and dynamics. Peter Gzowski says that the best of the best athletes in all sports understand the game so well, and in such detail, that they can instantly recognize and capitalize upon emerging patterns of play. Analyzing Gretzky's hockey skills, he says, "What we take to be creative genius is in fact a reaction to a situation that he has stored in his brain as deeply and firmly as his own phone number." Gzowski presented this theory to Gretzky, and he fully agreed. "Absolutely", Gretzky said. "That's a hundred percent right. It's all practice. I got it from my Dad. Nine out of ten people think it's instinct, and it isn't. Nobody would ever say a doctor had learned his profession by instinct; yet in my own way I've put in almost as much time studying hockey as a medical student puts in studying medicine." Size and strength When he entered the league in 1979, critics opined that Gretzky was "too small, too wiry, and too slow to be a force in the [NHL]." His weight was , compared to the NHL average of at that time. But that year, Gretzky tied for first place in scoring, and won the Hart Trophy for the league's most valuable player. In his second year in the league, weighing just 165 pounds, he broke the previous single-season scoring record, racking up 164 points. The next year (1981–82), at 170 pounds—still "a wisp compared to the average NHL player"—he set the all-time goal-scoring record, putting 92 pucks in the net. He weighed "about 170 pounds" for the better part of his career. He consistently scored last in strength tests among the Edmonton Oilers, bench pressing only 140 pounds (64 kg). Stamina and athleticism Despite his lack of strength, Gretzky had remarkable physical stamina. Like his hero, Gordie Howe, Gretzky possessed "an exceptional capacity to renew his energy resources quickly." In 1980, when an exercise physiologist tested the recuperative abilities of all of the Edmonton Oilers, Gretzky scored so high that the tester said he "thought the machine had broken." His stamina is also indicated by the fact that Gretzky often scored late in the game. In the year he scored his record 92 goals, 22 of them went in the net during the first period, 30 in the second—and 40 in the third.