when i masturbate, lying on my bed and i stretched out my legs, then squeeze my thighs,(or butt cheek??). why im doing this is this position gives more tight feeling?? to my root of penis(deep of my penis).when i'm not so hard it helps to get hard, penis gets more tight. because this way lock bloods in penis by force. i like this feeling so i did it for about 1 month. but recently i think i cant erect really hard. i dont know this is because of squeezing thigh or stressed or mental problem (ToT). does squeezing thigh cause ed?? i'm not good at english so maybe you cant understand some sentence im sorry T.T