The best tonic for soreness is to do the movement that got you sore in the first place.
If something is important, do it every day; if it's not important, don't do it at all.
There's nothing worse than when someone takes a community education course and becomes an expert on how yoga is the best way to burn the visceral fat that's housed deep in your abdomen.
I said it was simple. Not easy.
Just tell me what to do. I don't know where I'm going, but I know I don't want to be here.
Most new trainers agonize over the perfect workout, over-train virtually everyone and are the crazy purist idiots who embarrass themselves at restaurants trying to impress everyone with how clean they eat.