The Manual on MSN4mon
Mastering the back extension machine for increased strength
If you have a push day and a pull day, back extensions are part of a pull day. If you divide your workouts by area — arm day, ...
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Types of joint movement
Extension of the hip joint occurs when the femur moves backwards, which happens in the preparation for a kick in football, or in the back leg as a gymnast performs a split leap. Ball and socket ...