A Daily Workout Could Add 4 Years to Life, Study Says

From the article:

People who engaged in moderate activity—the equivalent of walking for 30 minutes a day for five days a week—lived about 1.3 to 1.5 years longer than those who were less active. Those who took on more intense exercise—the equivalent of running half an hour a day five days every week—extended their lives by about 3.5 to 3.7 years, the researchers found.

The findings show that even for people who are already middle-aged, exercising more can add years to their lives.