I'm 3 weeks in as of Friday at 400mg/week. I was at 300 mg the first week then bumped it up since I read a lot and people said might as well do a higher dose if you really want to see results. The first week I felt a sort of mood increase - which I can say I still feel pretty good mentally. I don't have that debilitating depression I used to get every few days. I am more positive generally. I just so happened to land a pretty good job at the start of my cycle - so it's hard to say what is causing my mood to change for the better.
Physically I don't really feel any stronger or look any better. Lost a little weight because I can't eat a lot at work. But I want to get more cut during this cycle anyway, I don't really want to gain weight. Looking forward to the next couple of weeks when people say is the time it should really kick in.