Fitbit recently announced that it’s bringing some changes to its personal health coach in Public Preview , with a gradual rollout scheduled for the following weeks. This includes a new personalized weekly fitness plan for Premium subscribers, which delivers customized targets and tailored workouts based on specific user goals. Fitbit adds that the update is also based on early tester feedback, and it plans to introduce the ability to tweak these plans and targets starting next week. The update also includes step-by-step guidance for coach-recommended workouts, in addition to a new stream of personalized messages within the Today tab. Users will now see “morning moments,” post-workout summaries, and end-of-week updates directly in their feed. Checking in for progress updates is also more straightforward, allowing for more natural interactions through the “Ask Coach” chat feature.…