The Doctor leaned on the TARDIS railings staring at Donna as she leapt about the place.

"Remind me again...what are you doing?"

"Zumba innit?! I'm tryna get fit so I can keep up with your running Space Boy!" Donna huffed.

"Riiigghhttt..." The Doctor replied. Why did humans feel the need to try and keep up with him? It wasn't like they needed to.

"Oh waiitt...I need a little something here. Music maestro!" Donna smiled as she flicked a switch on the TARDIS dashboard and Latino music blasted through the TARDIS. Donna began her energetic routine again, smiling wildly at The Doctor.

"Oh no." The Doctor sighed, "Donna you reeeaaaally don't need to do all this, couldn't we just, you know go for a gentle stroll? Have a cup of tea? Well you could have the tea, I'll have err...something else. And just. Not have all the wild leaping about?"

"But I gotta get fit! I mean on Si...Sigone? Sigoo? Sigaligadingdang?"

"Siganoh?" The Doctor corrected.

"That's the one. Well yeah on there I ended up trapped in that big...monsters pen coz I couldn't keep up."

"That was just one time Donna! Besides you gave poor Gertha the human interaction he needed!"

"Last week I got stuck in the Job Centre because I'm so unfit."

"Well ahhh...you know theres plenty of jobs waiting for you?"

"Friday. I had to look after two old age...aliens."

"Oh come on Donna, those were vital elements to the whole plan!"

"Yeah well whatever. I'm doing Zumba whether you like it or not!" The Doctor sighed, pulled out his book box from under the TARDIS and began flicking through books.

72 books later, Donna had finally finished her routine. Sweating and out of breath she strolled over to the bench and threw herself onto it. She looked at The Doctor who was trying to suppress laughter.

"Don't. You. Dare." She warned.

"I promise I wont. You've done a fantastic job and I'm proud." The Doctor smiled.

"Awwh thanks mate." Donna smiled back. The smiles lasted for 10 seconds before The Doctor burst out laughing.

"Look at your little face! Your little face!" The Doctor howled as Donna glared at him. When his laughter finally ceased, he noticed Donna's less than happy expression.

"Cake?" He asked. Donna's expression softened.

"Yeah, go on."

"I'm glad you said that because I've wanted to take you to the worlds best bakery for a long time."

"Now that, Space Boy, sounds like a trip I could enjoy."

"Righto. You go and get...ready, and I'll set up the coordinates."