So I've been working a lot lately. That's not unusual for me. But I've found myself waking up almost every day with a sore back, hands and toes. It seemed like I was just tired from working 6 days a week. But even on days where work isn't that physically demanding recently, I've been having soreness. I'm only 36 and I feel like I'm getting old. Any advice? I was thinking of trying magnesium. A friend of mine recommended that.