Patented SportLeg contains lactate forms of healthy calcium and magnesium with Vitamin D. Taken an hour before exercise, it pre-loads your bloodstream with lactate and tricks your muscles into thinking they don't need to make more—a sneaky way to raise lactate threshold and boost performance. Bicycling magazine's testers agreed: "It took longer to reach the burn point; legs kept going and feeling fresh, even up the final climb." No loading phase or every-day requirement. 120 capsules per bottle.
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