Isometric Exercise : Veryard Abs In 7 Seconds
Sunday, July 25th, 2010Isometric stress was once very hip in the 1960s and 1970s but has been just about disregarded since then.
When done properly isometrics can reshape a persons physique and add amazing strength without the person ever moving a muscle. During isometric contraction, the muscle is turned on and held at a constant length instead of [...]