Sore in Six: Abs is a great eccentric hard workout, accompanied by blood-pumping metal music!!
The reason why many people feel “my abs are never sore after a workout” is because they have not trained it the right way: to feel sore, muscle micro-tear caused by eccentric lengthening under load is the key.
That is exactly what Sore in 6: Abs workout focuses on. From Bruce Lee’s Dragon Flag to plate sit-up raise, all three exercises are eccentric load heavy. Try it and see if your abs are sore the next day!