- Extendthehamstrings.Createarchesinthefeet.Thisexerciseworksonbothyourspineandhamstrings.Thefemursareheldinneutralalignmentwithkneesextended,elongatingthehamstringsandlowback.Stepsworkwondersforliftingandtighteningtheglutealmuscles,quadriceps,calves,a...
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