Medical body area networks (MBANs) operating in the 2360–2390 MHz band enable continuous health monitoring across a wide range of clinical and home-care applications. This paper presents a comprehensive performance evaluation of off-body MBAN links based on Monte Carlo simulations using empirically derived channel models from the IEEE 802.15.6 standard. Two transmitter locations, chest mounted and right wrist mounted sensors, are investigated under standing and walking conditions for distances r