diff --git a/Home.md b/Home.md
index ca0edfc..b2f513b 100644
--- a/Home.md
+++ b/Home.md
@@ -5,4 +5,29 @@ Welcome to the Wiki.
 - **Exercise.** A specific movement or instruction
 - **Workout.** A combination of exercises
 - **Gear.** Equipment that is needed for the exercise or workout.
-- **Rep.** A single exercise execution
\ No newline at end of file
+- **Rep.** A single exercise execution
+
+# Database tables
+
+### Exercises
+
+| key | type | note |
+| --- | --- | --- |
+| exercise_id | uuid |  |
+| name | varchar |  |
+| description | varchar |  |
+
+### Muscles
+
+| key | type | note |
+| --- | --- | --- |
+| muscle_id | uuid |  |
+| name | varchar |  |
+
+### Exercises <-> Muscles
+
+| key | type | note |
+| --- | --- | --- |
+| exercise_id | uuid |  |
+| muscle_id | uuid |  |
+