try working out a sore muscle (with moderate intensity) , you'll actually feel better and less sore afterwards cause the workout will drive blood, glycogen, water, nutrients, etc. to the muscle. this is called 'active recovery' , and it works great for high frequency training (which also works great for body parts like arms, and calves).
of course this does not mean 'overload' a single muscle group daily, you won't be able to recover. so you have to adjust your WEEKLY training volume. If you've always done say 20 sets of bicep work on your once per week arm day , don't suddenly decide to switch over to high frequency training and then do 20 sets of arms every day! you need to increase the volume, say 25 sets, but then spread that volume out over the week.