OLD AND TIRED? TRY THIS FOR SIX MINUTES.

Just six minutes of walking can increase a person's motivation to perform physical activity and help alleviate feelings of fatigue and depression, maintains research conducted at Clarkson University, Potsdam, N.Y.

Ali Boolani, associate professor of physical therapy, conducted a study where he measured the mood of patients over the age of 65 before and after taking a six-minute walk, and found that patients saw decreased mental fatigue and anxiety as well as improved physical energy after their quick jaunt.

In addition, "after six minutes of physical activity, they were more motivated to perform physical tasks. If you're having a tough...