If you have rows of data which is hard to read and you would like to insert a blank row between each alternate rows do as directed.

Step :- 1 Open Excel

Step:- 2 Press Ctrl + F11

Step:- 3 Visual Basic Editor will open. Click on Insert -> Module

Step:- 4 Copy following code

Sub InsertBlackRows()
'Updateby20131127
Dim Rng As Range
Dim WorkRng As Range
Dim FirstRow As Integer, xRows As Integer, xCols As Integer
On Error Resume Next
xTitleId = "KutoolsforExcel"
Set WorkRng = Application.Selection
Set WorkRng = Application.InputBox("Range", xTitleId, WorkRng.Address, Type:=8)
FirstRow = WorkRng.Row
xRows = WorkRng.Rows.Count
xCols = WorkRng.Columns.Count
Application.ScreenUpdating = False
WorkRng.Cells(xRows, 1).Resize(1, xCols).Select
Do Until Selection.Row = FirstRow
    Selection.Insert Shift:=xlDown, CopyOrigin:=xlFormatFromLeftOrAbove
    Selection.Offset(-1, 0).Select
Loop
Application.ScreenUpdating = True
End Sub

Step:- 5 Then click on run  button to run the code, then a dialog is diaplayed on the screen for you to select a range to insert blank rows.

Step:- 6 Click Ok, and a new blank row will be inserted between every two rows.