diff --git a/daemon.py b/daemon.py
index 39e72ddc1..062852a14 100644
--- a/daemon.py
+++ b/daemon.py
@@ -347,6 +347,7 @@ from context import getIndividualPostContext
 from speaker import getSSMLbox
 from city import getSpoofedCity
 from fitnessFunctions import fitnessPerformance
+from fitnessFunctions import fitnessThread
 import os
 
 
@@ -16917,7 +16918,10 @@ def runDaemon(defaultReplyIntervalHours: int,
     assert not scanThemesForScripts(baseDir)
 
     # fitness metrics
+    fitnessFilename = baseDir + '/accounts/fitness.json'
     httpd.fitness = {}
+    if os.path.isfile(fitnessFilename):
+        httpd.fitness = loadJson(fitnessFilename)
 
     # initialize authorized fetch key
     httpd.signingPrivateKeyPem = None
@@ -17223,6 +17227,12 @@ def runDaemon(defaultReplyIntervalHours: int,
         print('Creating shared item files directory')
         os.mkdir(baseDir + '/sharefiles')
 
+    print('Creating fitness thread')
+    httpd.thrFitness = \
+        threadWithTrace(target=fitnessThread,
+                        args=(baseDir, httpd.fitness), daemon=True)
+    httpd.thrFitness.start()
+
     print('Creating cache expiry thread')
     httpd.thrCache = \
         threadWithTrace(target=expireCache,
diff --git a/fitnessFunctions.py b/fitnessFunctions.py
index 25a2f1b2b..43028b135 100644
--- a/fitnessFunctions.py
+++ b/fitnessFunctions.py
@@ -8,6 +8,7 @@ __status__ = "Production"
 __module_group__ = "Core"
 
 import time
+from utils import saveJson
 
 
 def fitnessPerformance(startTime, fitnessState: {},
@@ -37,3 +38,13 @@ def fitnessPerformance(startTime, fitnessState: {},
         print('FITNESS: performance/' + fitnessId + '/' +
               watchPoint + '/' +
               str(fitnessState['performance'][fitnessId][watchPoint]))
+
+
+def fitnessThread(baseDir: str, fitness: {}):
+    """Thread used to save fitness function scores
+    """
+    fitnessFilename = baseDir + '/accounts/fitness.json'
+    while True:
+        # every 10 mins
+        time.sleep(60 * 10)
+        saveJson(fitness, fitnessFilename)
diff --git a/tests.py b/tests.py
index f63a37c35..417a58845 100644
--- a/tests.py
+++ b/tests.py
@@ -4530,6 +4530,7 @@ def _testFunctions():
         'runNewswireWatchdog',
         'runFederatedSharesWatchdog',
         'runFederatedSharesDaemon',
+        'fitnessThread',
         'threadSendPost',
         'sendToFollowers',
         'expireCache',