One of McConaughey's most memorable workouts was a hike he took during a trip to French Polynesia with Alves, 28, the mother of his two children Vida, 13 months, and Levi, 2½.
"We went up to 3,000 feet and I had on hiking shoes and I was all set up and ready to go," McConaughey, 41, recalls in the April issue of Men's Fitness, which hits newsstands Monday. "[Camila] was wearing Havaianas sandals and a white skirt. I came down to the bottom of that hill afterward and had blood on me, [all] muddy … and that girl didn't have a speck of dust on her."
As for his workout preference, McConaughey enjoys using heavy rocks to help maintain his rock solid bod.
"It's not as simple as it seems," he says. "You shift the weight from high above your head, in your right arm, then your left, then rest it on your shoulders, adding more weight to your back, then your legs."
As he notes, "You get a full-body workout just by finding out how many positions you can manage without having to set the weight on the ground. You also discover the stronger and weaker spots in your physique."
McConaughey doesn't claim to be perfect, but he does know what's best for himself.
"I'm not a professional athlete," he says. "But I have a job where I like to look good and be as healthy as possible."
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