This was a good recovery run because it stayed honest. The legs were still heavy from Sunday, the conditions were humid, and the pace stayed appropriately relaxed instead of drifting into unnecessary effort.
The main value here is not speed but signal. Heart rate stayed reasonably contained for you, the run loosened up a little as it went, and the short strides added just enough movement without changing the overall recovery character of the day.
The caution is that recovery is clearly still in progress. The heaviness was real, the body is not fully turned over yet, and this should be read as a post-race absorption session rather than as proof that you are ready to jump straight back into quality work.
Takeaway. Good recovery signal, but not a green light for full quality yet. Let the body keep absorbing the half marathon before asking for another hard session.
Next step. Easy Run. Keep the next run conversational and relaxed from start to finish. The goal is to keep unblocking the legs and restore rhythm, not to test speed.