Copy all data from 2 worksheets into summary, excluding headings


I would like to automatically copy the entire rows of 2 different worksheets (excluding the top 3 header rows) into one complete summary worksheet after the 3rd row. I cannot have each worksheet's info overwrite the other and some cells are blank, which is okay, but if rows are blank I do not want them to be copied. The total number of rows to be copied may change each time, so I can't set a specific range to copy.