I've completed 6 days of the 30-day thrusting challenge last night.
Last night was also legs session.
Positive development: I can definitely feel my glutes firing when performing zercher squats and sumo deads. Those lifts also felt more solid.
Weird observation: Also did glute bridges last night... but didn't feel my glutes firing quite as much.
Glute size-wise (which is the whole reason I'm embarking on this challenge - yeah I'm shallow sue me), it's too early to tell whether I've made any progress.
Pants do feel a bit more snug... but it could just be my head playing tricks on me.