Many already integrate Whoop or other metrics with Xert. You can use them to inform your choice of workouts on a day-to-day basis. One thing that we have yet to see is how to predict what your level of stress/tiredness will be into the future so that we can forecast your training. This isn’t readily known and thus you have to make a “game time decision” anyway. With Xert, if you choose to veer off by either overriding training recommendations or using the Freshness Feedback to adjust the recommendations, you’ll know that these decisions will be accounted for in future recommendations, i.e. you’ll likely see changes as a result. This adaptive feature is the best way to incorporate things like Whoop, HRV or even your own personal measure of stress into your training.