During the 2020 primaries, he was sleepy and not with it in all the debates, but when it came time for the one-on-one debate with Bernie, all of a sudden he was "fiery" Joe.

The same thing happened at the state of the union. They literally hide him whenever they can, even to the point of him declining a pre-superbowl interview. And then all of a sudden he's "fiery" Joe again during the state of the union.

I have to believe that they are giving him some kind of concoction or drug or something, and I don't think it's conspiratorial to speculate that this is the case.

So to any biology/pharmacy/medical experts out there, what the hell is going on?