My energy is back.  Workout was at about 75% of normal, but then in  
the second half of my run I felt a rush of energy and finished it out  
sprinting.  I then mowed the yard, cleaned up the back yard, ran up  
to Sonic to pick up some ice and cups, and am now back writing this  
email.  About to head to work.

Let's see if I crash later on today ;-)

Jim