आसान प्राप्य फिटनेस
XBX and 5BX was created by the Royal Canadian Air Force. This app makes tracking your progress easy.
* Takes only 11-12 minutes per day
* Requires NO exercise equipment
* Progressively increases to enable you to achieve a desirable level of physical fitness.
* Automatically tracks your progress
* Provides optional exercises for XBX and variations for 5BX