Todd >  I can't think of a good reason to do four high-intensity
whole-body workouts a week.

Agreed completely.  If you're truly doing high intensity, whole body
work, you need at least 48 hours between workouts to recover.  And the
stronger you get, the less exercise you need.  I do Mondays and
Thursdays for a total of less than one hour a week.

Since we're far afield, email me directly if anyone wants more info.