Intrabody　communication　(IBC)　can　achieve　better　power　efficiency　and　higher　levels　of　security　than　other　traditional　wireless　communication　technologies.　Currently,　the　majority　of　research　on　the　body　channel　characteristics　of　galvanic　coupling　IBC　are　motionless　and　have　only　been　evaluated　in　the　frequency　domain.　Given　the　long　measuring　times　of　traditional　methods,　the　access　to　dynamic　variations　and　the　simultaneous　evaluation　of　the　time-frequency　domain　remains　a　challenge　for　dynamic　body　channels　such　as　the　cardiac　channel.　To　address　this　chal-lenge,　we　proposed　a　parallel　measurement　methodology　with　a　multi-tone　strategy　and　a　time-parameter　processing　approach　to　obtain　a　time-frequency　evaluation　for　dynamic　body　channels.　A　group　search　algorithm　has　been　performed　to　optimize　the　crest　factor　of　multitone　excitation　in　the　time　domain.　To　validate　the　proposed　methods,　in　vivo　experiments,　with　both　dynamic　and　motionless　conditions　were　measured　using　the　traditional　method　and　the　proposed　method.　The　results　indicate　that　the　proposed　method　is　more　time　efficient　(=　1　ms)　with　a　consistent　performance　(＞　98%).　Most　importantly,　it　is　capable　of　capturing　dynamic　variations　in　the　body　channel　and　provides　a　more　comprehensive　evaluation　and　richer　information　for　the　study　of　IBC.　©　2021　by　the　authors.　Licensee　MDPI,　Basel,　Switzerland.