diff --git a/analyze_sport_data/file_records.py b/analyze_sport_data/file_records.py
index 6505250..fc00bc0 100644
--- a/analyze_sport_data/file_records.py
+++ b/analyze_sport_data/file_records.py
@@ -1,5 +1,6 @@
 from datetime import timedelta
 from analyze_sport_data.heart_rate_record import HeartRateRecord
+from garmin_fit_sdk import Decoder, Stream
 
 
 class FileRecords:
@@ -14,3 +15,17 @@ class FileRecords:
                             record.heart_rate) for record in heart_rate_records
         ]
         self.heart_rate_time_offset = heart_rate_time_offset
+
+
+def from_fit_file(file_path: str,
+                  friendly_name: str | None = None) -> FileRecords:
+    stream = Stream.from_file(file_path)
+    decoder = Decoder(stream)
+    messages, _errors = decoder.read()
+    records = messages["record_mesgs"]
+    heart_rate_records: list[HeartRateRecord] = [
+        HeartRateRecord(record["timestamp"], record["heart_rate"])
+        for record in records if record["heart_rate"] != None
+    ]
+    return FileRecords(friendly_name if friendly_name != None else file_path,
+                       heart_rate_records)