The merchandise featured on this article have been independently reviewed. While you purchase one thing by the retail hyperlinks on this web page, we could earn fee for free of charge to you, the reader. The Sports activities Illustrated editorial workforce is just not concerned within the creation of this content material. Learn more here.
In the event you’ve ever set your self up for a HIIT circuit within the health club, you’ve most likely seen a chunk of apparatus that appears like a wheel with two handles. These exercise instruments are generally known as ab rollers, and when you’ve discovered your self questioning how and why to make use of it, this information was made for you.