1 The phase usually lasts up to 10 minutes.  You will be in light sleep in the second stage of a non-REM sleep. Your heart rate will come down and so will your body temperature. You will soon enter deep sleep phase.
Keep records for 3 years from the date you filed your original return or 2 years from the date you paid the tax, whichever is later, if you file a claim for credit or refund after you file your return. Keep records for 7 years if you file a claim for a loss from worthless securities or bad debt deduction. Keep records for 6 years if you do not report income that you should report, and it is more than 25% of the gross income shown on your return. Keep records indefinitely if you do not file a return.
December 13, 2010 (The Sacramento Bee) How long tax records should be kept and the amount of taxes owed on pension and Social Security income are issues addressed by IRS expert Jesse Weller.QUESTION: How long does the IRS require taxpayers to keep tax records? I hear it ranges from three to 10 years.axpayers must keep records supporting items shown on their federal tax returns as long as needed for administration of tax laws. That means records should be kept until the time period expires to amend a return to claim a refund or tax credit, or when the IRS can assess additional tax.