Why are long arm crunches hard?

The long arm crunch is a modified version of the tradition abdominal crunch. When the arms are extended above the head, it increases the level of resistance placed on the abs . Thus, the traditional ab crunch becomes a bit harder to perform.

Read more

The long arm crunch is a modified version of the tradition abdominal crunch. When the arms are extended above the head, it increases the level of resistance placed on the abs . Thus, the traditional ab crunch becomes a bit harder to perform.

Read more