There's a few rules that George Hood insists on following while planking:

* He needs to have four points of contact -- both arms and both feet -- at all times;

* There could not ever be any "daylight" from the wrist to elbow. Although he could shift his weight, Hood could not lift his arms from the ground at any point;

* His hands could not touch one another

* His legs had to be straight; and

* His back had to be straight, with no arch or dip.

Sound tough? The 55-year-old former Marine officer perched on a platform for 3 hours, 7 minutes and 15 seconds to break his own planking world record by more than an hour -- and raise $68,000 for charity last weekend.

"It was the longest plank I've ever done in my life," he said.

Hood began planking years ago, leading up to his first Guinness World Record in that event in 2011, because he said it is a standard for the fitness industry. He also also set records in jump roping and spin cycling.

"You kind of gamble on what records are going to be notable," he said. "Everyone has tried the plank."

After 16 1/2 month with his record of one hour, 20 minutes and 5.01 seconds solidly in the books in the planking, he was happy to leave his record as was. But then organizers for the Newport HeartChase asked him to help them honor last year’s organizer, Bob Clements, who passed away from a heart attack he suffered while running. The way to do it? Setting a new planking record.

"I thought to myself well I could make this a real home run if I go out and train and I could dedicate myself to breaking another record (in Clements' memory)," Hood said. "They'll never forget this guy now. They will always associate it with a Guinness World Record set on his behalf and it doesn’t get any better than that."

To train, he worked out up to four hours a day and planked for 12 hours a week leading up to the event. During his workouts, he also incorporated push-ups, more arm strength work and sit-ups. Once on the platform to perform the plank, he relied on his team who cheered him on and encouraged him through the strength test. He also listens to music, and allows a movie-like reel of images go through his mind of his dog, the ocean and other pleasant images.

Last weekend, he pushed himself past the three-hour mark for a new record, only stopping once his leg began to spasm.

It was enough to set a record that Guinness officials told him they believe won’t be broken. The $68,000 the event raised is also a record for the group's efforts for the AHA. Through all of his previous record-setting in the past, Hood says he has raised more than $100,000. All of his Guinness World Records, he said, are done to raise money for a good cause.

"I can't save the world," he said. "But I can do it one life at a time and I'm OK with that."

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