- 1、Tostretchthequads,youworkthehamstrings.2、Sheisa34-year-oldmotherofquads.3、Downhillrunninghasitsupsidesbutkillsyourquads.Here'showtoavoidtheburn.4、Forbestperformance,usetrianglesandquadsoracombinationofboth.5、Ithinkthatismostlyduetomycomfortle...
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