Im tryin to drop 25 pounds in an 8 month span. My biggest worry is losing muscle. I dont have much muscle to begin with, im just tryin to cut down on fat, but maintain or add a few inches of mass. Obviously i gotta do cardio to cut down on fat, but like i said my biggest worry is burning off muscle during cardio. I dont like the stair climber, the eleptical, or any of those....i like to either walk or run. Between walking and running, what burns more muscle?? my diet is clean and good, no sweets or packaged processd food, 100% veggies, fruit, lean meats....the good stuff.