I'm now several episodes behind...
As for Coulson - he mentions at one point that a few skills are rusty, though he expects them to be in "muscle memory" - suggesting he's not in his original body.
I'm guessing he's a LMD - Life Model Decoy. They are solidly canon, and mentioned by Stark in the movie, even.
However, there's the whole stress on, "...Tahiti, it's a magical place...," that could speak to some other way to have him around.
As for Coulson - he mentions at one point that a few skills are rusty, though he expects them to be in "muscle memory" - suggesting he's not in his original body.
I'm guessing he's a LMD - Life Model Decoy. They are solidly canon, and mentioned by Stark in the movie, even.
However, there's the whole stress on, "...Tahiti, it's a magical place...," that could speak to some other way to have him around.