How to wake up early on the weekends and clear that morning brain fog quickly:
Step one: Have a painful calf cramp that has you pleading. "No, No No," as you frantically massage the knotted muscle.
Step two: After the cramping subsides, lie still, willing your muscles to relax.
Step three: Let things great and small, important and trivial rush through your head, ensuring that even if your muscles relax, your brain won't. Look at the clock, sigh,
Step four: Get up. Start the coffee.
Step five: Optional, but recommended, drink your coffee while staring at the horizon, letting the trivial thoughts fade into the background.