Crossword puzzle clue "it's all just posturing"

It's all just posturing

Posturing

Hourlong period where you can just forget about the world in the dim, sweaty room you've dreamt about all day and, like the instructor says, just leave it all on the bike

Just ___ ... or "Just '___"

Laundry basket of just colors or just whites?

"T-ball is just like baseball, except there's no pitching -- just like the ___" (David Letterman)