diff --git a/02_Day_Data_types/02_day_data_types.md b/02_Day_Data_types/02_day_data_types.md
index e27d43d..07270e9 100644
--- a/02_Day_Data_types/02_day_data_types.md
+++ b/02_Day_Data_types/02_day_data_types.md
@@ -63,7 +63,8 @@ Primitive data types in JavaScript include:
  4. Null - empty value or no value
  5. Undefined - a declared variable without a value
  6. Symbol - A unique value that can be generated by Symbol constructor
-
+ 7. BigInt - represent numeric values which are too large to be represented by the number
+    
 Non-primitive data types in JavaScript includes:
 
 1. Objects
@@ -176,7 +177,7 @@ const PI = 3.14       // pi a geometrical constant
 
 // More Examples
 const boilingPoint = 100 // temperature in oC, boiling point of water which is a constant
-const bodyTemp = 37      // oC average human body temperature, which is a constant
+const bodyTemp = 37      // oC average human body temperature, which is not constant
 
 console.log(age, gravity, mass, PI, boilingPoint, bodyTemp)
 ```