It's useful for Abs training for all gender.
Like situps, crunches help you build muscle. ... This intense muscle isolation makes them a popular exercise for people trying to get six-pack abs. This also makes them ideal for strengthening your core, which includes your lower back muscles and obliques. Doing so can improve your balance and posture.
The Ab Coaster works exactly the opposite from a traditional ab crunch machine. Rather than working your ab muscles from the top down, the Ab Coaster works from the bottom up, helping you target those hard-to-reach lower abs. Just kneel on the comfortable carriage, and pull your knees u.
The ORIGINAL Award Winning Abs Workout Machine – Beware of knock-offs! – For over 10 years, The Ab Coaster has been used in millions of homes around the world to Change Lives From the Core