diff --git a/.env.example b/.env.example
new file mode 100644
index 0000000..8c51878
--- /dev/null
+++ b/.env.example
@@ -0,0 +1,3 @@
+# Configuration
+CROSSFIT_USERNAME=Kevin8407
+CROSSFIT_PASSWORD=9vx03OSE
\ No newline at end of file
diff --git a/book_crossfit.py b/book_crossfit.py
index 3746858..9bfc291 100755
--- a/book_crossfit.py
+++ b/book_crossfit.py
@@ -12,12 +12,16 @@ from urllib.parse import urlencode
 from typing import List, Dict, Optional
 
 # Configuration
-USERNAME = "Kevin8407"
-PASSWORD = "9vx03OSE"
+USERNAME = os.environ.get('CROSSFIT_USERNAME')
+PASSWORD = os.environ.get('CROSSFIT_PASSWORD')
+
+if not all([USERNAME, PASSWORD]):
+    raise ValueError("Missing environment variables: CROSSFIT_USERNAME and/or CROSSFIT_PASSWORD")
+    
 APPLICATION_ID = "81560887"
 CATEGORY_ID = "677"  # Activity category ID for CrossFit
 TIMEZONE = "Europe/Paris"  # Adjust to your timezone
-TARGET_RESERVATION_TIME = "20:00"  # When bookings open (8 PM)
+TARGET_RESERVATION_TIME = "20:01"  # When bookings open (8 PM)
 DEVICE_TYPE = "3"
 APP_VERSION = "5.09.21"
 
@@ -166,55 +170,6 @@ class CrossFitBooker:
             print(f"Unexpected error: {str(e)}")
             return None
 
-        try:
-            # Debug output
-            # print("\n--- Request Details ---")
-            # print(f"URL: {url}")
-            # print(f"Headers: {json.dumps(self.get_auth_headers(), indent=2)}")
-            # print(f"Payload: {request_data}")
-
-            # Make the request
-            response = self.session.post(
-                url,
-                headers=self.get_auth_headers(),
-                data=urlencode(request_data),
-                timeout=10
-            )
-
-            # Debug raw response
-            # print("\n--- Response ---")
-            # print(f"Status Code: {response.status_code}")
-            # print(f"Headers: {response.headers}")
-            # print(f"Content: {response.text}")
-
-            # Handle response
-            if response.status_code == 200:
-                try:
-                    json_response = response.json()
-                    return json_response
-                except ValueError:
-                    print("Failed to decode JSON response")
-                    return None
-            elif response.status_code == 400:
-                print("400 Bad Request - likely missing or invalid parameters")
-                print("Verify these parameters:")
-                for param, value in request_data.items():
-                    print(f"- {param}: {value}")
-                return None
-            elif response.status_code == 401:
-                print("401 Unauthorized - token may be expired or invalid")
-                return None
-            else:
-                print(f"Unexpected status code: {response.status_code}")
-                return None
-
-        except requests.exceptions.RequestException as e:
-            print(f"Request failed: {str(e)}")
-            return None
-        except Exception as e:
-            print(f"Unexpected error: {str(e)}")
-            return None
-
     def book_session(self, session_id: str) -> bool:
         """Book a specific session with debug logging."""
         print(f"\n[INFO] Attempting to book session_id: {session_id}")
@@ -429,3 +384,4 @@ if __name__ == "__main__":
             booker.book_session(session.get("id_activity_calendar"))
         
 
+