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The bicycle of
the invention has the advantages as follows:
1. the rider of the bicycle can perform workout on
both upper and lower limbs concurrently;
2. the front wheel can be driven forward by the hands to increase the
speed of the bicycle;
3. the workout effectiveness of the bicycle can be enhanced;
4. the rider of the bicycle can choose whether to cause the front
wheel to move forward or not, or can drive the bicycle to move
forward only by the front wheel using the handlebar assembly on even
road, which provides the rider with the flexibility of using the front
wheel or the rear wheel or using both to drive the bicycle to move
forward;
5. the invention requires low costs and simple technologies; and
6. the continuous reciprocating movement of the handlebar assembly
and/or the rocker arm of the bicycle of the invention can recharge
effectively the batteries.
The Youtube only demonstrates the core of this tech., for details, please see the full text 
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