Follow these 4 simple rules on how to work your lower abs. Don't get stuck with a 4 pack abs, instead work on getting the full washboard. Want core strength, six-pack abs, and a healthy spine?

Follow these 4 simple rules on how to work your lower abs. Don't get stuck with a 4 pack abs, instead work on getting the full washboard. If Pilates is good enough for Navy SEALs, it’s good ...