Take it from a 70-year-old bodybuilder how to schedule your weights routine.

Dr. Robert Drapkin, 70, a Florida-based oncology doctor, regularly competes in competitions, recently winning second place among men over 70 in the Masters National Bodybuilding Championship.

Passionate about staying fit, he offered one simple way to alter your workout for the best. Alternate which body part you work out, exercising a different muscle group once a week, he suggested.

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"Each muscle needs some exercise each week," he said.

Monday, he does pushing exercises, working his chest, triceps and shoulders. He opts for seated chest or bench presses, but cautioned that his workout regimen is not for everyone.

Tuesdays, he rests. "The body needs rest in order to grow," he said.

Wednesdays, he focuses on legs, which can include barbell squats or hamstring curls, and Thursdays, he rests again.

On Friday, he suggests zeroing in on the pulling muscles. Pull-ups can work for this, or barbell curls.

Pairing this with a diet that focuses on eating something that "runs, swims, flies or grows in the ground" is ideal, he added. Most of all, he emphasizes remaining active _ young or old.

"People have a difficult time when they don't do things," he said. "Our body doesn't adapt to inactivity."

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