Toning shoes are designed with unstable features like rocker or wobble soles that alter muscle activity and force the body to work harder or realign posture. While they do change muscle activity and alignment, the evidence shows this likely isn't enough to provide significant toning effects. However, they may help treat some posture-related problems by altering foot and leg positioning.

2.  Toning shoes are shoes that have design
features that make them unstable
 These design features can be a rocker sole or a
‘wobble’ sole
 The purpose of this instabilty of to either/or
make the muscle work harder (ie the ‘tone up’)
and/or realign the skeleton

3.  The lab based evidence is, yes they do alter
muscle activity
 However, that is generally considered not to be
enough to give a tone up
 The lab based evidence is, yes they do alter the
alignment and posture of the foot and leg
 This later effect has potential to treat a variety
of posture related problems

4.  Toning Shoes Today:
 http://www.toningshoestoday.com/
 PodoPaedia:
 http://podiapaedia.org/index.php?title=Tonin
g_shoes
 Podiatry Arena:
 http://www.podiatry-arena.com/podiatry-
forum/tags/index.php?tag=/toning-shoes/