6 daily practices this 82-year-old triathlete and neurosurgeon uses to lengthen his healthspan - CNBC

This is the reality for Dr. Joseph Maroon, an 82-year-old triathlete who also works as a consultant neurosurgeon for the Pittsburgh Steelers and medical director of the World Wrestling Entertainment (WWE).

He experienced a "lifequake," as he describes it, when his dad passed; it both led him to his lowest point of quitting neurosurgery and flipping burgers at age 40, and his purpose, when the banker who held the mortgage of the burger joint, invited him to go running.

"I noticed coincidentally with my physical activity, my depression was slowly lifting, my 15-pound weight loss was coming down, my brain was starting to function again and eventually, I was able to get back to neurosurgery," Maroon says.

Maroon's diet consists of mostly fruits and vegetables with chicken and fish occasionally.

He makes sure that he spends equal time on work, family/friends, spirituality and physical activity each day.

He also takes magnesium to balance his workouts and glyteine, which he believes may reduce chances of developing Parkinson's disease and Alzheimer's.