But he did feel well enough to party later!
Mike hit L.A. restaurant STK for a party celebrating Dancing dude Derek Hough's line of denim, and he seemed to be doing just fine.
"I did what I set out to do and that's show you who I really am," he said, giving a small fist pump.
Even though he didn't take home the disco ball trophy, he didn't leave empty-handed last night.
Mike left the bash with a lovely lady, who joined him in his limo.
His Dancing castmates say they're sad to see him go, too.
"He did good, man," Derek offered.
"He's awesome!" Kyle Massey enthused, while Mark Ballas described the fist-pumper as "dope."
"I'm gonna miss him!" he added.
Aww, we'll miss him, too. Or maybe just his abs.