One of the fastest ways to develop increased static-passive flexibility, isometric stretching uses the resistance of muscle groups through isometric contractions of the target muscles. Isometric stretching is even more effective than active stretching or passive stretching.
Isometric stretches help to develop strength in the target muscles and seems to decrease the amount of pain usually associated with stretching. Static-active flexibility is also increased due to the use of muscular contractions.
This is not isometric stretching, but it’s a cool image.
Now we can examine how, why, when, and where to use isometric stretching. You can then decide if isometric stretching is right for you.