Naked jumping jacks!

"...Jumping jacks!" Janice says with a big, happy grin as Lauren feels a knot forming in her belly.

"Oh... I-I don't know..." the small, pale, stubby-legged girl with the pudgy tummy stammers.

Her hands instinctively start to cradle her belly as her face burns with embarrassment.

"Lauren," the big blonde babe says as she gently takes the smaller girl's hands and gives them a gentle, caring squeeze. "Lauren, look at me."

Lauren reluctantly complies, she just feels so weak and helpless and utterly inadequate as woman, especially in front of this towering, perfect amazon.

"It's a simple, easy-to-do exercise, and if you really want to change who you are, you're going to have to start somewhere, ok?" Janice says as looks deeper into Lauren's eyes and continues to tenderly hold her hands.

"It's just..." Lauren bites her lip. "I... I'll look stupid."

"No, you wont Lauren, now come on, why not try doing a few, ok?" Janice says as she gently places Lauren's hands at her sides and lets go. "Please?"

Lauren feels a flutter in her tummy, a good one, as she looks into Janice's piercing eyes. She nervously smiles and nods. "O-ok..."

"Great!" The trainer says as she excitedly claps her hands together. "Let's start with something easy, but challenging. "Do 60."

Lauren's jaw drops. "That many?"

"It'll go by faster than you know," Janice says as she assumes an unintentionally sexy pose that leaves her own body completely exposed, directly in front of Lauren. "I'll do them with you."

Lauren's heart starts to flutter as she stares at her naked trainer. "O-ok..."