Should You Train When You Are Still Sore?

There are actually two different issues that you’re bringing up here which are general fatigue and soreness.

First, the easier of the two is soreness. Simply, this doesn’t matter. Soreness appears to mainly be an issue of connective tissue damage more than anything muscularly (despite still being called Delayed Onset Muscle Soreness (DOMS) and there is no problem training through it.

Most find that by the time they are done warming up, the majority of the soreness is gone, and even more find that as they get used to a higher training frequency soreness becomes much less anyhow. They also usually start growing better.