SpasmMassageMuscle SpasticityNeck MusclesSpasms, InfantileCervical AtlasOccipital BoneNeuromuscular AgentsSpinal Cord InjuriesMusclesHemifacial SpasmBotulinum Toxins, Type AHeart MassageMotor NeuronsElectromyographyMuscle ProteinsMuscle, SmoothMuscle, SkeletalCoronary VasospasmMuscle, Smooth, VascularMuscle Fibers, SkeletalEsophageal Spasm, DiffuseMuscle ContractionMuscle DevelopmentFacial MusclesMuscle FatigueAromatherapyErgonovineMuscle Fibers, Fast-TwitchMuscle DenervationMuscle Fibers, Slow-TwitchAngina Pectoris, VariantMyocytes, Smooth MuscleMitochondria, MuscleRelaxation TherapyOculomotor MusclesMuscle RelaxationMuscle, StriatedTherapeutic TouchMuscle SpindlesRespiratory MusclesCarotid SinusMuscle WeaknessPapillary Muscles