With the introduction of Apple Fitness +, Apple now has a part of its workout for fitness + tools that provides links to purchase workout items used in fitness + videos.
Many fitness + exercises are designed to work without any equipment, but some require specific equipment. Cycling exercises, for example, require a cycling bike, while treadmill exercises require a treadmill.
The only fitness-based products that Apple actually sells through its store are the Manduka Yoga modules and mats, which Apple began offering last week. With the exception of a few stands provided by Apple, other devices are being attached to outdoor stores where devices can be purchased.
As for dumbbells, Apple recommends Rock Rubber Hex dumbbells, which, like many dumbbells at the moment, are not in stock. Many have returned to strength training in their homes, which has led to a lack of available equipment.
Apple recommends Skin indoor cycling bikes for cycling, a Life Fitness Row HX trainer for rowing, and Techno Jim Myron and Skilrone for treadmill workouts.
Although Apple recommends this tool on its website, Apple Fitness + Exercises is also designed to be equipment agnostic and will work with the treadmills, rotations and other devices you already have.