How does Black deal with the double pawns c7 and c6 on the Ruy Lopez exchange variation? In other words, after:
[FEN ""] 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. d4 exd4 6. Qxd4 Qxd4 7. Nxd4
I feel that the doubled pawns are cumbersome, and I don't know how to use these two pawns in action. In the endgame, this can become a liability.
So, how can I use the doubled pawns to my advantage?