You just finished your run, only to immediately feel a dull ache in your lower back. What is that!? you think to yourself. But the reality is, running and a weak core don’t mix. One way to help build ...

Scissor crunches kick up a fast burn in the abs and hip flexors using a vertical scissoring leg motion. Unlike flutter kicks, butterfly kicks, or scissor kicks (so much kicking), the scissor crunch ...