I think it's probably best to work out in the morning to get it out of the way. My ultimate top tip is to drag yourself, even if you have to roll yourself out of your bed and in to a sit-up - it's really not that bad once you start.
I would say that President Roosevelt probably was more intimately in touch with the press corps at the White House than President Truman was.
The trouble with talking too fast is you may say something you haven't thought of yet.

