The actors I respect are the ones who see it as a career and manage to live reasonably normal lives, like Meryl Streep and Philip Seymour Hoffman.
If the human race wants to go to hell in a basket, technology can help it get there by jet.
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.