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Magnetic braking, a mechanism with which angular momentum is lost from the system, governs the evolution of binary stars such as cataclysmic variables (CVs), as well as regulates the spin-down of single stars, like our Sun. However, a physical phenomenon governing such a braking mechanism is still not well understood. In this talk, I will present our physically motivated Double Dynamo formalism of magnetic braking, which explains the prominent features of CVs. In addition, I will touch upon how this model can be used to address the problem of stellar spin-down and its possible implications on habitability. |