diff --git a/OGP1718-Worms/src/worms/model/Worm.java b/OGP1718-Worms/src/worms/model/Worm.java
index cb72c69..378eb35 100644
--- a/OGP1718-Worms/src/worms/model/Worm.java
+++ b/OGP1718-Worms/src/worms/model/Worm.java
@@ -27,7 +27,15 @@ public class Worm {
 
     // jumping
     private Tuple<Double, Double> oldLocation;
+    
+    /**
+     * this variable contains the velocity of the jump of the worm
+     */
     private double jumpVelocity;
+    
+    /**
+     * this variable contains the duration of the jump of the worm
+     */
     private double jumpTime;
 
     /**