Fig. 2: Conceptualizing electromagnetic wave propagation behavior in the presence of the Human Body.
From: Body-resonance: transmission line-like wireless links enabling high-speed wearable communication

a Transmitter (Tx) and receiver (Rx) dipole communicating in Air, b Electric-field plot of the Tx-Rx interaction at 100 MHz, c Human Body Communication with Tx and Rx on the body. Schematic representation of the radiation from Tx-Dipole: (d) in Free-space /Air, (e) in the presence of the human body. Conceptual Circuit model: (f) Tx-dipole, (g) Rx-dipole.