Since they have a high amount of lean mass of muscles, the dogs need food of animal background. (usbones.com)
Consider a 135 - pound woman who has about 25 % body fat and 100 lb of lean mass. (wellnessmama.com)
The first 2 groups had no significant increase in lean mass, whereas the group that took creatine and lifted weights gained almost 4 pounds of lean mass in 1 month. (legionathletics.com)