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.
Four yearsâ Employment tax records must be kept for a minimum of four years from the date the tax was due or paid. Six years- If you have filed a tax return the did not include reportable income (more than 25% of the gross income reported) you must keep your tax records for six years. Seven yearsâ When a claim has been filed for a loss from securities or bad debt, all records must be kept for seven years.