Apple is working on a sleep tracker for the Apple Watch—even though that seems completely impractical

Apple is working on a sleep tracker for the Apple Watch—even though that seems completely impractical

Earlier this month, Apple unveiled the new (and slightly improved) Apple Watch. The new version is waterproof and comes in new materials, but it still has roughly the same size, battery life, and screen quality. Even still, Apple is looking to bring new functionalities to the second version of the watch, according to a report…