MANY OF THE changes that Apple introduced in watchOS 7 are about making the Apple Watch a better fit with your life. From new kinds of workout tracking to a much smarter Siri, the Apple Watch is more flexible than ever. The Activity app is no more: it’s been redesigned and renamed Fitness. But while the core functionality hasn’t changed, the newly named app can track some new kinds of workouts: Dance workouts, Functional Strength Training workouts, Core Training workouts, and your post–workout Cooldown. That makes Fitness useful for an even larger group of people.