Only started taking gym and diet seriously for past 3 months, going at hard (for me) and started taking msn anabolic muscle fuel as a supplement and have never been on a cycle. I have found myself over this period getting progressively more assertive/aggressive . Could this be my supplement ? Iam 41 yrs old. Whilst this is not problematic and find that I can be more confrontational, I work in a high stress environment where confrontation is commonplace.