Just a few hundred calories above your maintenance needs, combined with strength training, can allow your body to put on more muscle mass than eating to maintenance alone. (rawbarrel.com)
Once those factors start to level out, the body will reach new strength levels by putting on more muscle size and density. (blog.bridgeathletic.com)
They will assist with recovery, harder training and putting on more muscle while cutting calories. (fitnessandpower.com)