
Cross crunches are more advanced and challenging than the traditional abdominal crunch. This kind of crunch gets more than just your rectus abdominus muscle, which are the abs we call the the "6 pack".
One needs to have good spinal mobility for cross crunches without any issues that would complicate like a herniated disc.
Read more about cross crunches to see if they are right for you in Dr. Marko's new guest feature in OpenFit.
