just when i thought i had good strong legs...i do loads of walking, ive brought myselft some 7inch blood red heels i have only in the past worn flats but thought to hell with it an jumped in at the deep end... well after stumbling around for a few days an god do my legs ache, but they seem to be sort of strenthing my calf muscels an toning the shape an defernition of my legs...its like a good workout for the tooties lol