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Wireless Body Area Network (WBAN) is an emerging research area focuses within Mobile and Ad-hoc Network (MANET). WBAN mainly deals with the remote health observation, depending on the requirements of miniaturized wireless sensors tactfully placed on the human body. These sensors are used to monitor various important parameters related with the human health. There are number of challenging tasks for researchers to address specific requirements of WBAN related with the propagation and energy models for wireless communication on the body. This piece of work consists of two parts: propagation model for static and dynamic nodes with the human body, and proposed energy model for WBAN. Special attention is paid on the node movement issues related to the wave propagation of wireless signals around the body. Path loss of (up to 20dB) is investigated when a node moves with the body in log normal shadow fading environment. An energy model for WBAN based on the values of power received and path loss from the propagation model is also proposed in this paper.