Sub DoubleSpace()
Dim LastRow As Integer
LastRow = Range("A65536").End(xlUp)
For i = 1 To (LastRow * 2) Step 2
Rows(i + 1 & ":" & i + 1).EntireRow.Insert
Next i
End Sub
Sub DoubleSpace()
For i = Range("A65536").End(xlUp).Row To 1 Step -1
Range("A" & i).EntireRow.Insert xlShiftUp
Next i
End Sub
Sub Test()
Dim x As Long
Application.ScreenUpdating = False
For x = Range("A65536").End(xlUp).Row To 1 Step -1
Cells(x, 1).EntireRow.Insert
Next x
Application.ScreenUpdating = True
End Sub