A study from the Pennington Biomedical Research Center finds that walking, even if only ten minutes per day, can be beneficial. Dr. Tim Church says a group of 464 women who walked for 72 minutes a week for six months improved their heart health and fitness.

"Ten minutes a day improved individuals quality life related to stress and anxiety, quality of life related to how they feel in social situations and quality of life related to energy levels."
Church cautions if you are looking to lose weight, you might need to exercise more than just ten minutes a day. A person’s metabolism can be elevated for one to three days following a workout. Church says this short burst of exercise is a start.
"Understand you're getting benefit from just the little amount of exercise  as you work your way up hopefully to 150 minutes of walking a week."