Recently, fitness and health promotion by doing regular jogging exercises are becoming popular. Having a stable and steady stride frequency is critical for the performance of jogging. This paper reports the progress of the design and implementation of a wearable appliance, namely the Intelligent Socks, for assisting the runner to keep steady stride frequency. The proposed appliance uses a set of pressure sensors to improve the accuracy of stride detection. Moreover, the socks provide vibration and sound feedback to help the runner to synchronize with the reference stride frequency. We have implemented an initial prototype and have conducted experiments to find the best way of providing vibration feedback.