diff --git a/backend/secfit/workouts/mixins.py b/backend/secfit/workouts/mixins.py
index 4910d29a7f1b6769344b6d63c74114fe00211c33..d37b6c4381c3ab3fa05ffb29315594056ebc55d7 100644
--- a/backend/secfit/workouts/mixins.py
+++ b/backend/secfit/workouts/mixins.py
@@ -2,6 +2,7 @@
 Mixins for the workouts application
 """
 
+
 class CreateListModelMixin:
     """Mixin that allows to create multiple objects from lists.
     Taken from https://stackoverflow.com/a/48885641
diff --git a/backend/secfit/workouts/models.py b/backend/secfit/workouts/models.py
index 5e3c6d1614d54992b42491bee8207a65410c5961..deb67b34a8fbd185f9cb0552daf24081d595a61b 100644
--- a/backend/secfit/workouts/models.py
+++ b/backend/secfit/workouts/models.py
@@ -71,7 +71,7 @@ class Workout(models.Model):
 class Exercise(models.Model):
     """Django model for an exercise type that users can create.
 
-    Each exercise instance must have an exercise type, e.g., Pushups, Crunches, or Lunges.
+    Each exercise instance must have an exercise type, e.g., Push-ups, Crunches, or Lunges.
 
     Attributes:
         name:        Name of the exercise type
diff --git a/backend/secfit/workouts/parsers.py b/backend/secfit/workouts/parsers.py
index 3255481ce8d327bdfa92f434bf1f03e04d158443..8011ffa0fa1800423d069b47cab4d8dfb236ed2f 100644
--- a/backend/secfit/workouts/parsers.py
+++ b/backend/secfit/workouts/parsers.py
@@ -3,6 +3,7 @@
 import json
 from rest_framework import parsers
 
+
 # Thanks to https://stackoverflow.com/a/50514630
 class MultipartJsonParser(parsers.MultiPartParser):
     """Parser for serializing multipart data containing both files and JSON.
diff --git a/backend/secfit/workouts/tests.py b/backend/secfit/workouts/tests.py
index 4bf357a58b7279a82387f232a3572170720a896d..8fd410ed4d42a1cc080ea571b1f030925629ad9d 100644
--- a/backend/secfit/workouts/tests.py
+++ b/backend/secfit/workouts/tests.py
@@ -45,7 +45,7 @@ def mock_workout():
 
 class IsOwnerTestCase(TestCase):
     """
-    Checks ownership permissions
+    Ownership permissions
     """
     def setUp(self):
         self.is_owner = IsOwner()
@@ -55,20 +55,20 @@ class IsOwnerTestCase(TestCase):
 
     def test_has_object_permission(self):
         """
-        Validates object permission
+        Object permission
         """
-        self.assertFalse(self.is_owner.has_object_permission(
+        self.assertIs(self.is_owner.has_object_permission(
             self.request, None, self.workout.workout
-        ))
+        ), False)
         self.request.user = self.workout.workout.owner
-        self.assertTrue(self.is_owner.has_object_permission(
+        self.assertIs(self.is_owner.has_object_permission(
             self.request, None, self.workout.workout
-        ))
+        ), True)
 
 
 class IsOwnerOfWorkoutTestCase(TestCase):
     """
-    Validates owner of workout permissions
+    Owner of workout permissions
     """
     def setUp(self):
         self.is_owner_of_workout = IsOwnerOfWorkout()
@@ -77,11 +77,11 @@ class IsOwnerOfWorkoutTestCase(TestCase):
 
     def test_has_permission_method(self):
         """
-        Get permission
+        GET permission
         """
         request = mock_request()
         request.method = "GET"
-        self.assertTrue(self.is_owner_of_workout.has_permission(request, None))
+        self.assertIs(self.is_owner_of_workout.has_permission(request, None), True)
 
     def test_has_permission_workout(self):
         """
@@ -90,7 +90,7 @@ class IsOwnerOfWorkoutTestCase(TestCase):
         request = mock_request()
         request.method = "POST"
         request.data = {"workout": ""}
-        self.assertFalse(self.is_owner_of_workout.has_permission(request, None))
+        self.assertIs(self.is_owner_of_workout.has_permission(request, None), False)
 
     def test_has_permission_user(self):
         """
@@ -102,21 +102,21 @@ class IsOwnerOfWorkoutTestCase(TestCase):
         request.data = {
             "workout": "http://localhost:8000/api/workouts/1/"
         }
-        self.assertTrue(self.is_owner_of_workout.has_permission(
+        self.assertIs(self.is_owner_of_workout.has_permission(
             request, None
-        ))
+        ), True)
 
     def test_has_object_permission(self):
         """
         Ownership permissions
         """
-        self.assertFalse(self.is_owner_of_workout.has_object_permission(
+        self.assertIs(self.is_owner_of_workout.has_object_permission(
             self.request, None, self.workout
-        ))
+        ), False)
         self.request.user = self.workout.workout.owner
-        self.assertTrue(self.is_owner_of_workout.has_object_permission(
+        self.assertIs(self.is_owner_of_workout.has_object_permission(
             self.request, None, self.workout
-        ))
+        ), True)
 
 
 class IsCoachAndVisibleToCoachTestCase(TestCase):
@@ -131,25 +131,25 @@ class IsCoachAndVisibleToCoachTestCase(TestCase):
 
     def test_has_object_permission(self):
         """
-        Validates object permissions
+        Coach has object permissions
         """
-        self.assertFalse(self.is_coach_and_visible_to_coach.has_object_permission(
+        self.assertIs(self.is_coach_and_visible_to_coach.has_object_permission(
             self.request,
             None,
             self.workout.workout
-        ))
+        ), False)
 
         self.workout.workout.owner.coach = self.request.user
-        self.assertTrue(self.is_coach_and_visible_to_coach.has_object_permission(
+        self.assertIs(self.is_coach_and_visible_to_coach.has_object_permission(
             self.request,
             None,
             self.workout.workout
-        ))
+        ), True)
 
 
 class IsCoachOfWorkoutAndVisibleToCoachTestCase(TestCase):
     """
-    Validates coach relation and permissions for a specific workout
+    Coach permissions for a specific workout
     """
     def setUp(self):
         self.is_coach_of_workout_and_visible_to_coach = IsCoachOfWorkoutAndVisibleToCoach()
@@ -159,25 +159,25 @@ class IsCoachOfWorkoutAndVisibleToCoachTestCase(TestCase):
 
     def test_has_object_permission(self):
         """
-        Validates coach permissions
+        Coach permissions
         """
-        self.assertFalse(self.is_coach_of_workout_and_visible_to_coach.has_object_permission(
+        self.assertIs(self.is_coach_of_workout_and_visible_to_coach.has_object_permission(
             self.request,
             None,
             self.workout
-        ))
+        ), False)
 
         self.workout.workout.owner.coach = self.request.user
-        self.assertTrue(self.is_coach_of_workout_and_visible_to_coach.has_object_permission(
+        self.assertIs(self.is_coach_of_workout_and_visible_to_coach.has_object_permission(
             self.request,
             None,
             self.workout
-        ))
+        ), True)
 
 
 class IsPublicTestCase(TestCase):
     """
-    Validates test case public permissions
+    Test case public permissions
     """
     def setUp(self):
         self.workout = mock_workout()
@@ -185,25 +185,25 @@ class IsPublicTestCase(TestCase):
 
     def test_has_object_permission(self):
         """
-        Validates workout permissions
+        Workout permissions
         """
-        self.assertTrue(self.is_public.has_object_permission(
+        self.assertIs(self.is_public.has_object_permission(
             None,
             None,
             self.workout.workout
-        ))
+        ), True)
 
         self.workout.workout.visibility = "CO"
-        self.assertFalse(self.is_public.has_object_permission(
+        self.assertIs(self.is_public.has_object_permission(
             None,
             None,
             self.workout.workout
-        ))
+        ), False)
 
 
 class IsWorkoutPublicTestCase(TestCase):
     """
-    Checks that a workout is publicly available
+    Workout is publicly available
     """
     def setUp(self):
         self.workout = mock_workout()
@@ -211,25 +211,25 @@ class IsWorkoutPublicTestCase(TestCase):
 
     def test_has_object_permission(self):
         """
-        Validates workout permissions
+        Workout permissions
         """
-        self.assertTrue(self.is_workout_public.has_object_permission(
+        self.assertIs(self.is_workout_public.has_object_permission(
             None,
             None,
             self.workout
-        ))
+        ), True)
 
         self.workout.workout.visibility = "N"
-        self.assertFalse(self.is_workout_public.has_object_permission(
+        self.assertIs(self.is_workout_public.has_object_permission(
             None,
             None,
             self.workout
-        ))
+        ), False)
 
 
 class IsReadOnlyTestCase(TestCase):
     """
-    Checks that objects have the correct read only permission
+    Read only permission
     """
     def setUp(self):
         self.is_read_only = IsReadOnly()
@@ -238,9 +238,9 @@ class IsReadOnlyTestCase(TestCase):
 
     def test_has_object_permission(self):
         """
-        Validates that the test has the correct object permissions
+        Object permissions
         """
-        self.assertTrue(self.is_read_only.has_object_permission(self.request, None, None))
+        self.assertIs(self.is_read_only.has_object_permission(self.request, None, None), True)
 
         self.request.method = None
-        self.assertFalse(self.is_read_only.has_object_permission(self.request, None, None))
+        self.assertIs(self.is_read_only.has_object_permission(self.request, None, None), False)