diff --git a/backend/app/services/garmin_connect_sync.py b/backend/app/services/garmin_connect_sync.py
index b960ef5..57a14e6 100644
--- a/backend/app/services/garmin_connect_sync.py
+++ b/backend/app/services/garmin_connect_sync.py
@@ -342,6 +342,9 @@ def sync_wellness(garmin, user_id: int, since: Optional[datetime], db,
                     len(mm_raw) if isinstance(mm_raw, (list, dict)) else "n/a")
         if isinstance(mm_raw, list):
             mm_entries = mm_raw
+            if mm_entries and isinstance(mm_entries[0], dict):
+                logger.info("maxmet first entry keys: %s", list(mm_entries[0].keys()))
+                logger.info("maxmet first entry: %s", mm_entries[0])
     except Exception as exc:
         logger.info("maxmet history fetch failed: %s", exc)