I was watching an interview with Belgian tennis player Kim Clijsters today and I was stunned.
She wears a mouth piece during training and on court. Before her comeback she had a lot of problems with her hip and shoulder. Since she wears that mouth piece she feels a lot more stable while moving and running and has been injury free.
Weird huh?



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but before that, I'd started sticking my tongue out the way the pros do, and it worked wonders. I'd be afraid to try it in a sprint, but it was great for those steep hills!
