Regaining muscle is a case of either using it or losing it, says James McKendry of McMaster University.

Phyllis Ridgway was born in 1907 in Lincolnshire, England.

In addition to helping seniors improve their mental and physical health, The Little Sweat Shop builds community.

Muay Thai is a combat sport from Thailand also known as Thai boxing. It is an explosive form of kickboxing noted for being a very powerful ring sport.

Mental stimulation is thought to help with dementia, but there’s stronger evidence for more challenging activities than puzzles.

Ageism in Hollywood is rampant, says Meera Estrada. A recent example is the move to laud Keanu Reeves for his 'age-appropriate' girlfriend, Alexandra Grant.

Parkour gyms help to physically and mentally prepare parkour athletes by mimicking the obstacles that are found outdoors, and the training conditions of parkour gyms can be modified to suit the training needs of the practitioners.

“I have a gym in the basement of the house and I go down there religiously to work out,” Calhoun said. “I’m consistent. I do it every day, upper body and lower on different days.”

How do exercise regimens from different cultures compare to a traditional gym routine? This is the first episode of a new series called the Culture of Fitness.

This week, we compete with two of their participants. Mike teamed up with 78-year-old Pat and Ross teamed up with 65-year-old Nick.