What is Equality’s feeling when he awakens the next day in the Uncharted Forest? How is this related to the title?

Equality feels a sense of freedom that he's never felt before.... the freedom to do as he wishes, to lay around, to relax, or to run. For him, this is an expression of a new identity, a song of freedom.... thus, an anthem to his own individual identity.

We did not wish to move. We thought suddenly that we could lie thus as long as we wished, and we laughed aloud at the thought. We could also rise, or run, or leap, or fall down again. We were thinking that these were thoughts without sense, but before we knew it our body had risen in one leap. Our arms stretched out of their own will, and our body whirled and whirled, till it raised a wind to rustle through the leaves of the bushes. Then our hands seized a branch and swung us high into a tree, with no aim save the wonder of learning the strength of our body. The branch snapped under us and we fell upon the moss that was soft as a cushion. Then our body, losing all sense, rolled over and over on the moss, dry leaves in our tunic, in our hair, in our face. And we heard suddenly that we were laughing, laughing aloud, laughing as if there were no power left in us save laughter.