1. Scientific Recovery Design Improves rotational mobility for the upper limb Supports rehabilitation training for elderly arm and shoulder exercises Aids grip function recovery through targeted muscle participation 2. Adjustable Resistant Standards Tailor your arm workout with adjustable rotary resistant for musclespecific training and targeted arm resistant Ensures workout adaptation to suit individual fitness goals 3. Cycling Motion Integration Strengthens arm coordination and balance via adjustable multiangle setups Ensures seamless cycling motion integration with double support for single or double arm exercises 4. Improved Stability Design Provides workout displacement elimination with antislip adhesion Provides handle fixation stability for secure and uninterrupted arm training process Use scenarios Scenario 1: At home rehabilitation for elderly users focusing on improving rotational mobility and grip function, supporting safe arm and shoulder exercises. Scenario 2: training or selfguided routine to develop musclespecific arm strength by adjusting resistance and angles, helping reach individual fitness goals without overtraining. Scenario 3: Crosstraining for cycling enthusiasts to enhance arm coordination and balance, using multiangle setups to integrate into warmups or conditioning for singlearm or doublearm workouts.