Itisrelatedtothemalarbone''stoughbandandtherelaxationoftheperipheralmuscle''sloosefleshedge.MostpeoplehaveIndianlinessincetheywereyoung,andtheygraduallyworsenwithage,andtherearetearsintheditch.TheproblemofApplemusclefaultcanbesolved.Afterthat,wecancompletelysolveit. .