Here is another plank trainer that combines with your phone to make exercise more fun. The MOBI FITNESS Core Trainer supports 360-degree motion. It can handle up to 400lbs of weight. This companion app has 3 games for you to try (e.g. Stars Hunter, Shuttled Spaceship).
More gadgets like this: here
This core trainer has a soft rubber layer to go easy on your arms. It has a lightweight design, so you can move it anywhere.
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