text:  Felicia Schwartz, Financial Times. Thank you, Mr. President. Presidency is the most straining job in the world, and it's 24-7. How can you say you'll be up for that next year, in two years, in four years, given the limits you've acknowledged that you have today? The limits I've acknowledged I have? There's been reporting that you've acknowledged that you need to go to bed earlier and your evening around 8. That's not true.