Yes, because breathing is a luxury you just don't need when you have good posture.
Hence the "breath in, hold it, then lace" rule of thumb, it is when you exhale then lace that there is no room for deep breaths, it seems that comprehensive reading is a luxury you just don't need when you have an itch for trolling ^^
You're cute, hold that breath while someone behind you is pulling that corset tight, see how long that lasts. Again, breathing is a luxury, and tying a corset takes a while. Hope you can hold your breath.
Corsets when worn correctly can do wonders for your posture (take a deep breath, hold it and then lace it)