Weight Lifting with Still Sore Muscles?

Ever wonder whether you should strength train when your muscles are fatigued from a previous workout? Not sure what the protocol is? Simple - don't. Here's why: The soreness/fatigue in your muscles is a signal your body is sending you that the muscles you broke down in your previous workout have not been completely rebuilt.

And that's the purpose of the workout in the first place - to rebuild the muscles with slightly greater capacity than they had before. Hitting them again before the fatigue or soreness has left interrupts that critical process. So your next workout is not only not as pleasant, but it's not particularly productive either.

So wait another day or two. It's for the best.