Emphasis Preaching Journal
Bill Hybels relates that in...
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Bill Hybels relates that in the Boston Marathon there is a legendary obstacle called Heartbreak Hill. Starting at mile thirteen of the Boston race course, there are a number of hills, climaxing at mile nineteen with Heartbreak Hill. It's the longest, steepest hill in the race. What makes this hill even worse is that world-class runners "hit the wall" around mile eighteen or nineteen (even if they're running a level grade). That is, their bodies have depleted the glycogen stored in the muscles. That glycogen has been replaced with lactic acid. The muscles are screaming for oxygen.
