diff --git a/MovesenseExerciseService.cpp b/MovesenseExerciseService.cpp
index 02266fd..5d4fea3 100644
--- a/MovesenseExerciseService.cpp
+++ b/MovesenseExerciseService.cpp
@@ -70,19 +70,12 @@ bool MovesenseExerciseService::startModule()
 {
     mModuleState = WB_RES::ModuleStateValues::STARTED;
 
-    // Start LED timer. true = trigger repeatedly
-    mTimer = ResourceClient::startTimer(BLINK_PERIOD_MS, true);
-
     return true;
 }
 
 void MovesenseExerciseService::stopModule()
 {
     mModuleState = WB_RES::ModuleStateValues::STOPPED;
-
-    // Stop LED timer
-    ResourceClient::stopTimer(mTimer);
-    mTimer = whiteboard::ID_INVALID_TIMER;
 }
 
 void MovesenseExerciseService::onUnsubscribeResult(whiteboard::RequestId requestId,
@@ -131,6 +124,10 @@ whiteboard::Result MovesenseExerciseService::startRunning(whiteboard::RequestId&
         DEBUGLOG("asyncSubscribe threw error: %u", result);
         return whiteboard::HTTP_CODE_BAD_REQUEST;
     }
+
+    // Start LED timer. true = trigger repeatedly
+    mTimer = ResourceClient::startTimer(BLINK_PERIOD_MS, true);
+
     isRunning = true;
 
     return whiteboard::HTTP_CODE_OK;
@@ -157,6 +154,11 @@ whiteboard::Result MovesenseExerciseService::stopRunning()
     {
         DEBUGLOG("asyncUnsubscribe threw error: %u", result);
     }
+
+    // Stop LED timer
+    ResourceClient::stopTimer(mTimer);
+    mTimer = whiteboard::ID_INVALID_TIMER;
+
     isRunning = false;
     releaseResource(mMeasAccResourceId);
 
@@ -203,7 +205,9 @@ void MovesenseExerciseService::onSubscribe(const whiteboard::Request& request,
     {
     case WB_RES::LOCAL::EXERCISE_SUMVECTOR_DENES::ID:
     {
-        // Someone subscribed to our service. Start collecting data and notifying when our service changes state (every 10 seconds)
+        // Someone subscribed to our service. Start collecting data
+        // and publish calculated sumvector average (every 1 second)
+
         whiteboard::RequestId remoteRequestId;
         whiteboard::Result result = startRunning(remoteRequestId);
 
@@ -256,6 +260,8 @@ void MovesenseExerciseService::onClientUnavailable(whiteboard::ClientId clientId
 
 void MovesenseExerciseService::onTimer(whiteboard::TimerId timerId)
 {
+    DEBUGLOG("MovesenseExerciseService::onTimer()");
+
     if (timerId != mTimer)
     {
         return;