That's not the point. Of course outdoor exercise is good for almost
everyone, but for professional athletes who depend on being in perfect
physical condition to maximize their relatively short careers,
engaging in *high-risk* recreational activities is foolish. You might
end up with serious damage due to something avoidable, like a
motorcycle accident (e.g., skier Hermann Maier, U.S. football player
Ben Roethlisberger). The question in this thread is whether Kvitova
meant training at altitude or actual mountaineering. The latter would
be an imprudent choice.