Need to shake up your outdoor workout routine? Begin by trying a fun new fat-burning activity. Run Your First 5K Running a 5K is a great way to challenge yourself while toning muscles and trimming body fat. "You can't find an easier and more efficient way to burn calories than running," says Julie Isphording, Olympic marathon runner and author of Get Healthy. Get Happy: … [Read more...] about 3 Awesome Outdoor Workout Ideas