One of the benefits that yoga gives me (and I am not trying to convert here, mind, any other upward reaching exercise will do) is to put my arms in other directions than they usually go.
I was a waitress in my 20s. The reach was always down. I'd get dizzy reaching up or backward. Mothering, the reach is down. Most of housecleaning, the reach is down. Walking, the reach is flat, running, the reach is flat. Computer work, the reach is flat.
The yoga that I'm doing raises arms for good lengths of time.
What I see at the assisted living center is a lot of 85-90+-year-old women who can't even reach up. They've trained their muscles down. They'd have had a hard time reaching up when they were 62.