The joy of a good night's sleep just can't be overstated. Somewhere around my 50th birthday, I lost the ability to get one. I went from being someone who could shut her eyes and not open them for eight hours to a person who now does a victory lap around the bed if I manage four hours in a single stretch.
Serena Williams has had her share of health issues. Last summer Williams returned to tennis after battling a year-long series of problems, including c...