Pilates.

"I'll start off with Pilates," Frank answered.

"It looks like you're in pretty good shape," Rachel purred, admiring his physique as they got on the treadmills. He stood at 6'4" and weighed about 230 pounds, easily towering over his slim trainer, but he started jogging to try to shed some pounds from his belly. "Do you Pilates or yoga?"

"I tried yoga when I was married," he replied as he followed her to the open area of the gym.

"Well, it looks like you have no problem with weights. The stretching will help you out," the blonde said, sitting cross legged.

Frank could not keep his eyes off of her reflection in the mirror in front of them while they did different stretching poses. She looked like she stepped out of one of the fitness magazine with her tone abs and legs, however, she could easily be in Maxim magazine with her large tits, wide hips, and nice round ass. She wasn't blind to his admiration and smiled back at him as she got on all fours arched her back. "You can do it, Frank."

He had difficulty trying to follow her while stealing glances at her in in different poses that he fantasized being below or behind her.

Then he stopped and stood up.

"What's wrong, Frank?" Rachel wondered. "Cramp?"

"No, you're green," he grinned, pointing at her choker.