Radiation from cordless phones affect cardiac rhythms. Research on healthy volunteers showed that 40% had marked increases in heart rate, arrhythmia, and other disturbances in heart rate variability following exposure to active cordless phone base stations which were emitting a 2.41 GHz pulsed microwave signal. This is the same.... Read more here: https://www.lifeenergysolutions.com/blog/cordlessphones-heart/