How do you wireshark wireless body area networks?

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What procedure do I follow to capture Wireless Body Area Networks (WBAN) using Wireshark?

If you're talking about an IEEE 802.15.6 BAN, then the first few steps of the procedure are:

1. get a linktype value assigned to 802.15.6 for use in pcap and pcapng files;
2. find a device capable of capturing 802.15.6 traffic;
3. write software that either
   1. supports that device in libpcap
   2. writes pcap or pcapng files as an extcap module
   3. writes pcap or pcapng files as a stand-alone program;
4. write a dissector for IEEE 802.15.6 and submit it for inclusion in Wireshark.

I.e., there's no procedure you can use with the existing Wireshark; Wireshark, and possibly other software, will need to be extended to handle it.