I did not need muscle toning in my legs.  I bought the shoes hoping they would help with my plantar fasciitis.  The helped a bit.  However, the shoes are very very heavy.  I mean brick heavy.  The heaviness is the only thing that I do not like about the shoes. You can walk in them but don't expect to run or to be agile at, like when you have to move sideways when the sidewalk changes in a 90 degree angle.  You won't be able to make any quick maneuvers.