Dynamic tension

Lamp

Gold Star Holder!!
Joined
Jan 16, 2005
Messages
23,347
Anyone know much about how "dynamic tension" works to build muscle bulk ?

:)
 

Cromcruaich

Can't get enough of FH
Joined
Nov 29, 2004
Messages
2,767
My right arm is bigger than my left, so must be something in it.
 

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