MAG-10 healing power?

Does taking a substance like MAG 10 or other steroids substantially increase wound healing as well as muscle growth. I have been taking MAG 10 since wednesday. I currently have a few bruises that are fading almost before my eyes. Normally a bruise would not disappear nearly this fast. Is the MAG 10 behind this or are there underlying nutritional factors that influence bruise fading. I am also eating approx 800 cals over maintenance. Just an observation i found intriguing.
L8R