At the same time, this device is pretty easy to use and it provides great value for the money. What this means is that cubii jr. Cubii Jr Review Is This Under-desk Elliptical Worth It - Reviewed Cubii is a fitness brand that creates seated ellipticals which make it possible for you to stay active while you work, watch tv, or lounge on the couch (though that does take some of the purpose out of “lounging”!). Do cubii really work . Cubii helps raise your heart level as you work your core muscles. The cubii works like any under desk or compact elliptical. The cubii pro is a good elliptical purchase for this audience: Cubii really works for someone who otherwise stays mostly stationary during their daily routine. She loves cubii because it makes it easy to work out at home and almost anyone can do it. Cubii is a seated elliptical machine, so it works the lower body and a bit of the core (abdominal) muscles as well. Was built and optimized to function under your desk. ...