Apple’s paid fitness service, Fitness+, is a pretty good collection of workout videos in a variety of styles, lengths, and difficulties. From the beginning, it was conceived as a way to increase the value of the Apple Watch–specific workouts are automatically synced with Apple Watch, and live metrics from the watch are shown on your TV, iPad, or iPhone to keep you motivated. With the release of iOS 16.1 on Monday, October 24 (along with iPadOS 16.1 and tvOS 16.1), Apple is officially dropping the requirement to own an Apple Watch. All you need is an iPhoneWhen you upgrade to iOS 16.1 (availabl…