Ever hide one or more rows at the top of your worksheet and scratch your head when you want to unhide them? Just press the F5 key and manually enter a cell address for one of the hidden rows.
Then, click on the Format icon and choose Hide & Unhide > Unhide Rows from the Cells group on the Home tab.
If you have hidden several rows, say, 1 through 5, go to cell A1 using the steps above and unhide it. Then, just select the rows surrounding the hidden rows, 1 and 6, on the left side, right-click and choose Unhide.