Before we go any further, note that this article is for those who already have a very low body fat percentage. (fitnessandpower.com)
How you view your diet is arguably the most important aspect of maintaining low body fat levels. (completehumanperformance.com)
Most people's perception of tone is when you have decent muscle size with low body fat count, so you can see the shape of the muscle beneath the skin. (chestsculpting.com)