If you get a lot of interruptions during exercise asking if your workout is finished, it's likely because the Apple Watch isn't detecting something that suggests you're still exercising, like movement or an increased heart rate. In some cases, you can fix the problem by adjusting your Apple Watch's fit or location on your wrist. If you're getting false inputs while exercising that might be hitting the pause "button," turn on Water Lock by swiping up on the watch face and selecting the icon shaped like a raindrop. This setting blocks all screen inputs until you turn the Digital Crown.