Unfortunately, Bethany set up an anti-gravity muggle machine for him to use. Blaise had to hire a magical engineer to supply a magic-infused electrical plug for it and everything. Bethany said it would help build his muscles without too much stress. He could walk longer and make his limbs get stronger. She had him put these weird shorts on and then strapped him into the machine with a cover wrapped around his waist. The treadmill filled with air, making him float a little, and she made the machine start moving. He was not looking forward to this as the muggle machine came to life, making him move his feet.
"Here, you control the speed," she said.
Draco didn't want to push the weird buttons, but he knew that she would not let him get away without doing it. The ground started moving faster, and he was forced to walk. It felt different and easier, but not as light and easy as the Lightening Charm. He had to use his muscles to keep going. He was forced to take steps to his feet, dragging on the moving "belt". It took a minute, but he fell into a rhythm. His steps were getting more and more confident. After twenty minutes, she pulled him out and stretched his muscles.
"You're doing great. We're making progress," Bethany said, as she checked his flexibility, again. Even Draco could see that his legs bent further back and with less pain. It was too slow. He wanted to be... normal again. He sighed.
"I know you're frustrated, but you'll get there. You've come a long way," she stated.
If she only knew. "Thanks," he said, quietly. It was hard to talk to the muggle.
When she left, he changed into better clothes and came out so Blaise could take him to the jump point. However, Blaise didn't walk him to the café, and Draco appreciated it. He didn't know why he kept meeting Harry at the café, as they always left with each other anyway, but it was a routine. Draco could understand routine... and Harry could, too. He saw that Harry was there, as he usually was. He was wearing a blue silk shirt with a V-neck, exposing more of his skin. 
Draco groaned internally. Harry was now deliberately winding him up. He wondered if he should wear less. Draco hadn't been able to go out without wearing long sleeves. Besides his faded Dark Mark, his arms still had some scars despite Harry's initial attempt to remove them that day when Harry confessed what had happened to him five years ago. Draco hadn't considered asking him to try again. He also had other scars on his neck, chest, and shoulders, which is why he didn't wear a low-collared shirt, either. No, he was going to keep his skin covered. Draco didn't feel comfortable with strangers seeing his scars, nor did he want the reminder.
"Hey, how was physical therapy?" Harry asked, as Draco pushed his walker over to him and sat down.
"Enduring," he sighed. "She made me walk on this... moving-walking-thing."
"A treadmill?" Harry asked, and nodded in appreciation. "It's not a bad idea. Was it slow enough for you?"
"Yeah, she had me push the... buttons."
Harry laughed. "The perils of muggle tech."
Draco snorted and nodded. "It was easier... to walk."
"You should keep at it. Does she... massage your muscles out?" Harry probed, lightly. It was hard for him, as he was obviously better than anyone else at the job.
"As best she can," he mumbled. He didn't want Harry to feel guilty about it, but he did miss the smoothing massages Harry could do.
Harry massaged his hand and healed his aches. "I'm sorry... do you...."
"No. I'm okay. I am, Harry. It's just the normal aches and pains that everyone has to deal with when they're in recovery. You understand that, right? No one can do what you can... but the rest of the world survives anyway."