They exist, but the pedals are higher, for your arms! I used to work with a guy who did this: every day at lunchtime he’d go zooming around the parking lot getting a good workout in
https://bike-on.com/product-category/shop-handcycles/attachable-handcycles/
I’m an able-bodied handcyclist. Not a wheelchair attachment, but a dedicated handcycle. I’ve been riding one for over 20 years now. I alternate riding it and riding a leg-powered bicycle. Cycling and hiking are the only exercises I will religiously stick to. I realized that my upper body was being neglected and gave a handcycle a shot.
They are super fun and a great workout. I prefer my handcycle rides tremendously over my to eg-poweted bicycle rides (but I can’t skip leg day). I highly recommend trying out a handcycle to anybody who thinks they may be interested.
If you’re in the Los Angeles area, and are interested in trying one out, message me. I love introducing folks to handcycles and live down the block from a bike path. I even have a couple for sale that I’d let go at a very reasonable price if anyone wants one. I just don’t want to ship them.
This better not be like the last time someone on the Internet invited me to come visit them in a strange city if I was curious about trying hand stuff.
