Target your lower abs to finally get that 6 pack!! Ok, now that you've read the opening sentence and want to know how, I'm here to tell you to forget about it!! First, you can't really target "lower abs" Lower abs isn't even a muscle. The muscle at play (that's right, the 1 single muscle) when you see a six-pack is the rectus abdominis. You no more have a lower ab than you do a lower bicep or lower triceps muscle. When you contract your rectus abdominis, it contracts from top to bottom.