I don’t know. Biden and Sanders seem to be in decent shape. Biden’s problems have been going on a long time and may have little to do with age. He is just a dingbat.
Pelosi and Hillary? Not so much. People age differently.
Trump seems to be in excellent shape.
Biden has survived two brain aneurysms. If I were in his place, I would keep my stress level down, and make sure I do not engage in the godless type of politics he has been practicing all of his life.
Trump seems to be in excellent shape.
Use it daily. Stay rust free.