A dual band antenna operating at 2.45 and 5.8 GHz ISM bands is proposed for wearable applications. The antenna is simple in design where a coplanar waveguide (CPW) fed structure along with a slot in the patch are responsible for generation of dual band property. As the wearable antenna works in close proximity of the human body so, it is susceptible to various performance degradations. In order to restore the antenna performance, a fully flexible artificial magnetic conductor (AMC) based ground plane is placed beneath the antenna which is found to enhance the front to back ratio, gain and efficiency of the standalone antenna. Additionally, it reduces the specific absorption rate (SAR) of the antenna which is a merit from the wearable point of view.