L Lisa New member Mar 12, 2011 #1 Whenever I do my sprints, my abs hurt so badly I have to stop. What can I do to strengthen them or even get a slight 6 pac? Btw I'm a girl.
Whenever I do my sprints, my abs hurt so badly I have to stop. What can I do to strengthen them or even get a slight 6 pac? Btw I'm a girl.
