AF John : yoga class

Robin said hi to Jenny, the chipper girl, and went into the locker room. John followed her, finding that locker 42 was not too far from Robin's. He opened his locker and saw a work out outfit, but no bag. Thinking back, Sara's story had changed. What was that key she had? There was no men's locker room here...
"Fuck," John swore under his breath.
"You ok?" asked Robin, putting her jacket and outdoor shoes into her locker. John stared for a minute. She was still beautiful. Her brunette hair only had a touch of grey, her curves were still killer and her breasts still some of the perkiest he had seen. Her ass looked great in her yogapants.
"Just fine."
"Need something?"
"No," replied John tersely as he closed his locker to leave.
"You look like you need to clear your head. I see you are checking out the gym, come to yoga. I'm sure you'll find it restorative."
"I'm good."
"Tell you what, if you go to yoga and don't like it, I'll treat you to breakfast," offered Robin. John thought for a moment. Robin liked a good bet and challenge. He could use this. Walking back to his locker he counter, "Tell you what, if I don't like it, you have to text someone you normally wouldn't text something embarassing."
"Well, this escalated quickly. Sure, but if enjoy yourself, you have to sign up for a membership and come at least twice a week. Deal?" asked Robin holding out her hand for a shake.
"Deal," replied John shaking her hand, not planning on staying Cleo past today.
"I'm Robin by the way. Nice to meet you Cleo. Let's go, after you get changed. You'll be very hot in that outfit. I'll wait for you," said Robin who sat down facing away from John. John went to the locker and opened it again. He took out the outfit, which was a sportsbra and shortshorts. He started to take off his clothing while his wife was making conversation. She was asking about where Cleo was from, what she was doing in town, if she met anyone fun. Robin also mentioned she had a daughter around Cleo's age. John laughed little at that one. After John closed his locker, Robin commented how pretty he looked and took his hand. Robin led him to a room with about a dozen other women, most of whom wore more than John. Most of them were middleaged, but there were a couple people younger. The instructor was gorgeous and flexible. She started a stick on incense and moved to starting the class. John found that while he was more used to the female body, these positions were hard. Who had made Warrior-III pose? By the end he was a little sore and sweaty, but in a good way. It helped he got to see some attractive women in various poses. He really like Camel. All the women went back to the locker room and started undressing as John went to his locker.
"So, what'd you think Cleo?