Huh? Muscles are too tight. That part's done. I'm wondering about loosening them back up. But pushing it more, rather than resting, backing off, letting them loosen up on their own more.
I suppose better rest, sleep.
Protein.
Calories.
Rolling, massage, etc.
Although if they're toughen, that suggests they've healed. Pushed, and then healed. So it's just breaking them back in at that point.
Something with slow, light movement. More precisely controlled. Not a broad, "German" approach.
But taking a break and resting is easier and still eventually gets things done.