Prep dry hair with setting spray. This will ensure that the final look lasts.
Part your hair down the middle in back, then twist the hair on each side of the part tightly toward your nape. Hold each twist in place with an elastic at the base of your neck.
Hide both elastics with a strand of hair from each ponytail. Secure the wrapped strands with a bobby pin. (The bobby pin will also help keep the twists from unfurling).