diff --git a/chap1.txt b/chap1.txt
index 01f3e67..5dfa171 100644
--- a/chap1.txt
+++ b/chap1.txt
@@ -24,4 +24,6 @@ How does this happen? How does a team of previously ordinary athletes
 transform into world champions with tiny changes that, at first glance, would
 seem to make a modest difference at best? Why do small improvements
 accumulate into such remarkable results, and how can you replicate this
-approach in your own life?
\ No newline at end of file
+approach in your own life?
+
+The 1st two lines tell about the types of massage gels. Added one line in this chapter1.
diff --git a/chap2.txt b/chap2.txt
index 00ef92a..583157f 100644
--- a/chap2.txt
+++ b/chap2.txt
@@ -17,4 +17,5 @@ money multiplies through compound interest, the effects of your habits multiply
 as you repeat them. They seem to make little difference on any given day and yet
 the impact they deliver over the months and years can be enormous. It is only
 when looking back two, five, or perhaps ten years later that the value of good
-habits and the cost of bad ones becomes strikingly apparent.
\ No newline at end of file
+habits and the cost of bad ones becomes strikingly apparent.
+Added one more line.
\ No newline at end of file
diff --git a/chap3.txt b/chap3.txt
index c948c7a..f621186 100644
--- a/chap3.txt
+++ b/chap3.txt
@@ -20,4 +20,5 @@ from Los Angeles to New York City. If a pilot leaving from LAX adjusts the
 heading just 3.5 degrees south, you will land in Washington, D.C., instead of
 New York. Such a small change is barely noticeable at takeoff—the nose of the
 airplane moves just a few feet—but when magnified across the entire United
-States, you end up hundreds of miles apart.
\ No newline at end of file
+States, you end up hundreds of miles apart.
+Added one line.
\ No newline at end of file
diff --git a/module1/sample-example b/module1/sample-example
new file mode 160000
index 0000000..890861c
--- /dev/null
+++ b/module1/sample-example
@@ -0,0 +1 @@
+Subproject commit 890861cdbce1a2f95a9768d7bcc59cdfccbceb89