> The key enabler underlying EQ-Radio is a new algorithm for extracting the individual heartbeats from the wireless signal at an accuracy comparable to on-body ECG monitors.

I'm wondering: could this technology be used to detect contraction of other muscles than the heart? Like performing a wireless EMG?

In case you were interested in the frequencies they were sweeping though:

We reproduced a state-of-the-art FMCW radio designed by past work on wireless vital sign monitoring [7]. The device generates a signal that sweeps from 5.46 GHz to 7.25 GHz every 4 milliseconds, transmitting sub-mW power. The parameters were chosen as in [7] such that the transmis- sion system is compliant with FCC regulations for consumer electronics

I wonder if you can use lower frequencies? Since we are surrounded by radio waves maybe you can use use on those cheap SDRs and look for the 50-150hz space to see if you can pick up heart rate.