There are no dressing rooms in Coney Island, as “Today” show host Hoda Kotb learned Wednesday afternoon. Kotb and her co-worker Natalie Morales were on the Boardwalk training for their first triathlon with Self magazine’s “Reach Your Goal” program. Our source said, “Hoda changed into her workout clothes in the back of her Town Car parked on 10th Street and Surf Avenue.” We hear Self editor Lucy Danzinger, an experienced triathlete, recommended that the women spritz on Pam cooking spray to get in and out of their wetsuits more easily.