diff --git a/app.py b/app.py
index 4ca1d33..aa3e318 100644
--- a/app.py
+++ b/app.py
@@ -349,6 +349,31 @@ def render_users_and_workouts():
         duration_sparkline = sparklines.sparklines(
             [int(w['duration_minutes']) for w in workouts])[0]
 
+        # REFACTOR
+
+        def date_range(start_date, end_date):
+            delta = end_date - start_date
+            return [(start_date + timedelta(days=i)) for i in range(delta.days + 1)]
+
+        dates = date_range(start_date, end_date)
+        daily_duration = []
+        for date in dates:
+            # check if workout exists for date
+            workout = [w for w in workouts if w['start_time_date'].date()
+                       == date]
+            if workout:
+                daily_duration.append(int(workout[0]['duration_minutes']))
+            else:
+                daily_duration.append(0)
+
+        # Reverse the daily duration list so that the most recent day is on the right
+        daily_duration.reverse()
+
+        daily_duration_sparkline = sparklines.sparklines(
+            daily_duration)[0]
+
+        # REFACTOR BOUNDARY
+
         user_data = {
             'id': user.id,
             'name': user.name,
@@ -360,6 +385,7 @@ def render_users_and_workouts():
             'num_days': num_days,
             'workout_counts_sparkline': workout_counts_sparkline,
             'duration_sparkline': duration_sparkline,
+            'daily_duration_sparkline': daily_duration_sparkline,
             'calendar_month': generate_calendar_monthly_view(workouts, datetime.now().date())
         }
         users_data.append(user_data)
diff --git a/templates/workouts_list.html b/templates/workouts_list.html
index 49c112e..b3d34d4 100644
--- a/templates/workouts_list.html
+++ b/templates/workouts_list.html
@@ -14,7 +14,7 @@
 
         </div>
     </div>
-    <div class="text-sm text-gray-700 mb-4 max-w-full overflow-hidden">{{ user.duration_sparkline }}</div>
+    <div class="text-sm text-gray-700 mb-4 max-w-full overflow-hidden">{{ user.daily_duration_sparkline }}</div>
     <div class="flex flex-col md:flex-row">
         <div class="w-full">
             <label class="block uppercase tracking-wide text-gray-700 text-xs font-bold mb-2" for="grid-state">