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...bike and look like Lance Armstrong, you're going to drop $8,000 or more. If you're an ultra-runner, you buy one pair of shoes. Tony Krupicka, one of the greatest young ultra-runners, has worn the same pair of crappy, cross-country flats for the past six years. It's actually one of the big debates in ultra-racing right now: some of the top competitors want there to be prize money, but the second money gets into it, the sport is ruined. Right now, there's a certain sense of amateurism and purity to the sport...
Compared with face-to-face counseling or medical treatments, online therapies are typically simpler and less expensive. Major health insurers like Blue Cross and Aetna even offer Web-based anti-insomnia programs for free (you can check out the retail versions at cbtforinsomnia.com or myselfhelp.com for as little as $20). And there's growing evidence that online therapy really works: in the new Sleep study, 81% of participants who completed a five-week, online program for insomnia reported improvement in sleep...
...Luxilon shot" all down to Luxilon string? In a 2006 article titled "The Inch that Changed Tennis Forever," Rod Cross, a physics professor at the University of Sydney, argued that the innovation in equipment that transformed topspin from a looping, defensive shot into a dive-bombing, offensive play actually happened in the late 1970s, when equipment makers widened the heads of professional rackets from nine inches to 10 (they also dropped wood for metal and eventually graphite). The extra inch allowed players to tilt the racket forward and swing from low to high without worrying about clipping the edge...
According to Cross, nothing much has changed since that innovation; it's only in the last 10 years that players have developed the physique and technique to take advantage of the extra width by whipping the racket up in a motion that generates about five times more spin than the ground strokes players were hitting in the 1970s. "Players were given an inch in the 1970s and they took a mile," he says...
...even as strings offer greater potential for spin, players need technique to fulfill that potential. As Miller says, "the most important factor in the generation of spin is racket speed." Research by Cross at the University of Sydney has shown that pro tennis players have much less feel for strings than they think, and tend to overestimate their importance. A study published last year found that 90% of professionals could not feel a 6 lb. (2.7 kg) difference in the tension of strings in two different frames - even though most professionals insist on exacting string specifications for their matches...