Just another reply to validate the morning feeling of being "beat up" or "hit by a train" is the term I usually use.
It's so bad for me, that a few mornings each week I awake at around 4:30 in terrible pain. Luckily for me, Lyrica helps and so I drag myself to bathroom and take one. The muscle relaxers work for this too. In my case, though, most muscle relaxers are SSRIs and I take too many of those already...