Before you start, watch this video - Correct Form
This is the first video we recommend you watch the day you pull your CastleFlexx out of the box!
Remember, this is a patented device so its literally one of a kind - There is no device on earth with a weighted bar for stretch assistance or a hands free option if you have arthritis or JRA.
Even the world's best athletes are required to watch this video before Dan Castle will train them to prevent injuries or improve agility and speed.
This is not a toy- Those who do not watch this video or the Getting Started video (choose one) , will risk injury or ineffective stretching.
If you purchased CastleFlexx as a gift, you will need to share this with them- Remind them to download the CastleFlexx app on Google Play or Apple App store- The app is free and this correct form section is available to anyone with our app. All other courses, flows and instructional videos are membership only.
I find it quite amazing that the first video you are required to watch to use this device you cannot access. For what I have just paid this is ridiculous. I mean people have been complaining about this since 2025. It’s now the end of May 2026. For what I paid for the equipment and what I paid for the subscription I may just return everything.