What's This Lift?

What’s it called where you have your legs braced, you’re on your front, and you raise up to help your back? Thanks.

Maybe you’re thinking of back extensions?

First exercise list…

http://orgs.jmu.edu/strength/JMU_Summer_2000_WebPage/JMU_Summer_2000_Sections/15c_Summer_core_Series_Erectors.htm

that’s it thanks