This presentation summarizes research on Ultra Wide Band Wireless Body Area Networks. It begins with objectives which are to understand UWB-BANs and their applications. It then introduces BANs and why UWB is suitable. Requirements for BANs are discussed. The presentation covers existing challenges and a proposed system using a dual UWB-narrowband approach. It describes the propagation channel model, UWB pulse modulation scheme, and MAC algorithm. Performance is evaluated based on packet loss, delay, throughput and energy consumption for different topologies with increasing sensor nodes. In conclusion, the presentation provides an overview of UWB-BAN research challenges, proposed solutions and evaluation methods.