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?
Likely Donepezil or any of the other current Alzhiemer treatments, alongside that some form of stimulant as many people have said alongside some form of benzodiazepine to allow for a reduction in anxiety/irritation that is really common for mid stage dementia (where I'd bet my money where Biden is at right now).