The Antelope shoes, featuring a concave sole and a unique spring action in its heels, will, supposedly, help the wearer lose weight in less than four weeks.According to the manufacturers of the shoes, the design causes the foot to rock back and forth as the weight of the body shifts in motion - like when walking on ...an unstable surface such as sand.As a result, muscles in the legs, hips, buttocks and abdomen are forced to work harder to maintain balance, burning more calories in the process.As well as helping to shed the pounds, the heels will also correct bad posture, straightening the spine while reducing strain on the knee and ankle joints.I hear! The shoes will be released into the market in 2013...and will be available in a number of different styles and colours, all priced at £75