Harbinger 364060 Core Balance Trainer 3" High x 13" Diameter (Blue)

Balance Disc and Bosu Balls are both essential tools for increasing proprioception, stability, and strength.

You can do push-ups, squats, lunges, and other bodyweight exercises on these equipments to increase the intensity and versatility of each workout. Try doing the exercises with just one hand or one leg for an even greater challenge.

I sit on my balance disc wherever I go: work, classes, meetings, movies, dates. These tools force you to have a great posture to stay balanced on them. You can slowly raise each leg up to get a nice core workout while you sit.

The balance disc is great since it is convenient to carry and inexpensive. The bosu ball is a worthy investment as well, but you should master the balance disc first.

If you don't feel the burn after 10 repetitions, you are doing the exercise wrong. In all exercises, it is the eccentric portion of the exercise that builds muscle. Do the exercise in a smooth, controlled fashion with a 3 concentric and 6 eccentric count. Squeeze at the peak of the motion to get that extra pump.

As in all exercises, make sure to keep your wrists straight and check your posture with these seven vital points: feet hips-width apart and pointed straight ahead; knees slightly bent; pelvis at perfect middle, as if you are sitting at a bar stool; stomach tight, but not flexed; chest straight and aligned on top of ribs; shoulders parallel to ribs; and neck straight on top of body.

The Fit Disc can be used for balance and core strengthening (abdominal and lower back) exercises. Enhances the posture as well.
I find the balance discs a great portable tool to help with a workout.
Some exercises that can be done using the Fit Disc:

-Standing single leg balance, core balance sit
-Sitting on the disc to do crunches and other ab exercises
-Standing on the disc while using dumbbells for arm strengthening
-Standing on the disc while doing squats
-Use the disc while doing lunges, step ups, push ups, planks

I got this to do proprioception exercises as part of my knee rehab. It's a lot like the one my PT gym has. The only problem I've had with it is that you can't adjust the inflation and it's a little under-inflated for me. The main exercise I do on it is to stand on it with one foot - but if I try to do it without shoes on (which I'd prefer) my foot bottoms out and ends up partly resting on the floor instead of on the cushion. My feet are women's size 7.5. (It works if I just wear flip flops.) Anyway, the price was decent and it's pretty good, just not adjustable.

My sister purchased a cushion similar to this one from her physical therapist for about $50. It is the best thing I have used for sitting on hard bleacher seats during sporting events. (Hers was similar to: Fitball Seating Disc Balance Cushion)

I didn't want to pay $50, so when I found this at Ross for under $10, it became mine. It works as well as her $50 cushion and I am delighted that I didn't have to pay the higher price.

For the reviewers who are not able to use this in the traditional way, try sitting on it the next time you go to a football or basketball game.

I have been suffering from leg pain for over 15 years, due to a sports injury. The problem may be a damaged tendon or ligament high up on my left leg. I have tried all kinds of chairs and pads. I have even used expensive jell cushions. Nothing seems to work. This product goes in the pile of do-nothings. In fact, my pain increased using it. Granted, I may not be using it as it is designed, as an excercise tool. Never-the-less, it is not for me or perhaps others who suffer from similar leg pain. I do a lot of work on the computer, hence the need for a comfortable seat.