Lindsey Valenzuela has risen to the top of CrossFit with a work ethic inspired by the SEAL mentality

Former college volleyball star Lindsey Valenzuela loves to lift weights. It's a passion to get stronger. But her rise to the upper echelon of the sport of CrossFit -- in which she is now No. 2 in the world -- came because she focused on her weaknesses and after sharpening her mental toughness with a crash course in SEAL-style training. My story on Valenzuela for ESPN.com's Endurance Sports section: http://espn.go.com/sports/endurance/story/_/id/9796654/endurance-sports-diverse-background-helps-improving-crossfit-star-lindsey-valenzuela