Naturally, it would be. The extra effort comes from her having to use fewer muscles, especially if she hasn't exactly been developing said muscles for a while. It will help her build upper body strength, which is what he wants, for sure, but for now, it's going to be difficult. If she sticks with it, it will get easier.

Arthur continues to keep an eye on her as she struggles to keep up with him and carry the bag. He slows his pace when he thinks she needs a little bit of a break from keeping his longer strides, but he doesn't ask her if she wants to stop.

"It won't do to injure yourself," he says instead, gently reminding her to be mindful of setting a limit. He wants to see if she'll understand.