The seats help if you're tall but don't have any more width. If memory serves you need to feel around the right side near the front of the cushion for the small recline lever.

The exit row is also a stretch seat and has a way of attracting large people trying to re-seat in mid-flight. FAs are inconsistent about shooing them away if they didn't pay (though with longer flights you're more likely to have fuller sections from elites or those who paid).