The real secret to a sexy stomach is carving out those lines to frame your budding six pack (a.k.a. your obliques). And while you're already well aware that planks help tone your entire core, there ...
YOU KNOW THE SAYING: Work smarter, not harder. You may have already incorporated that mentality into your training routine, subbing unfocused, 60-minute workouts for strategic 30-minute sessions, or ...
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