Here are seven seductive sirens that redefine the meaning of natural beauty, as selected by Men's Health editors:
Hottest Extreme Athletes Slideshow

Gretchen Bleiler
Age: 31. Sport: Halfpipe snowboarding. Achievements: Four-time X Games gold medalist, Olympic silver medalist. (For more gorgeous women at the top of their game, check out the 12 Sexiest Female Olympians.)

Lokelani McMichael
Age: 35. Sport: Surfing and Triathlon. Achievements: Youngest woman ever to finish an Ironman triathlon.

Alana Blanchard
Age: 22 Sport: Surfing. Achievements: First place, Women's Pipeline Championships, Hawaii.

Julia Mancuso
Age: 28. Sport: Alpine skiing. Achievements: Olympic gold and silver medalist. (Want to build a body that all women would want? Start by learning The Maximum Muscle Secret from Men's Health.)

Kristi Leskinen
Age: 31 . Sport: Freestyle skiing. Achievements: X Games bronze medalist.

Lyn-z Adams Hawkins
Age: 22. Sport: Skateboarding. Achievements: Three-time X Games gold medalist.

Malia Jones
Age: 35. Sport: Surfing. Achievements: Winner, United States Amateur Surfing Championship. For 100 more gorgeous female forms, check out the 100 Hottest Women of All Time.