ShoeGuy: Two-fers  When two (or three) pair of shoes is better
than one  December 5, 2006  Finally, there’s "Age-Grouper Andy,"
a runner always in need of two, maybe even three pairs of
different shoes, depending on the day’s road call. Andy has
collected so many age-group medals, there’s more hardware in his
attic than in the local Home Depot. All that cornucopia was
earned with smart, hard training that includes long, slow
distance, tempo runs, and weekly speed work.  Andy rotates
between plush, protective trainers for the long stuff, slightly
lighter-weight trainers for tempo days, and even lighter
trainers or maybe racing flats for the track. While the
different workouts spread out the stress on his legs, the
different shoes help him get the most out of the miles.  So if
your running is even remotely related to our mythical Dan,
Martha, or Andy, you’ll run faster, healthier, and less
expensively in multiple pairs of shoes. While Andy’s variety of
training begs for a variety of shoes, Martha’s first questi