<p><span></span>Just weeks after giving birth to twins <strong>Max</strong> and <strong>Emme</strong> in February, <strong>Jennifer Lopez</strong> had already lost 40 of the roughly 50 pounds she'd gained while pregnant. And nearly seven months later, the 39-year-old star was making her babies proud while competing with pal <strong>Matthew McConaughey</strong> in a triathlon. </p>
What's J.Lo's secret? For one thing, her trainer, Gunnar Peterson, tells Life & Style, "She's killing it in the gym three times a week."
For more on J.Lo's weight-loss secrets — and how to drop up to 20 pounds! — pick up the latest issue of Life & Style, on newsstands now!
Photo Credit: Abaca
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