Within the last 2 weeks the data for my Fenix seems really off. My sleep doesn't start for 2 hours after I actually fall asleep. Also, my stress levels are double what they have been for the last 8 months. The data is recording almost no rest and a lot of unmeasurable time. Even while sleep the data shows almost no rest. Is anyone having these issues? Is there something I can do to fix this? I feel fine, not tired or fatigued...