Iso Chain vasoconstriction – Is it present during usage?

Question

There has been talk where the Iso Chain would "close" blood vessels during exercising. Is this something that should be cautious of?

Answer 1

When using an Iso Chain while doing isometric exercises, it’s expected that one’s blood vessels would narrow and contract. As one becomes tensioned in the lock position, blood vessels may swell. Normal functioning of blood vessels occurs thereafter. A typical process that one does not need to be worried about.