Q: Q 571: I was really talking about a scenario where lets say one loses in the course of 6 months 6 pounds of muscle and loses also 20 pounds of fat.In such a scenario body composition has improved even though there is muscle loss.

A: OK I se... Yes, a scenario like that should be considered a very successful fat loss phase. You're correct that despite some muscle loss, the overall body composition would be significantly improved AND, because muscle loss is relatively minor and weight loss was gradual, the person would not be in danger of regaining fat back. But again, in order to achieve results like that you'd have to have a solid diet and a good weight-training program.