3 to 7 Years. Keep receipts that support tax deductions for three to seven years. The Internal Revenue Service can randomly audit your return up to three years after the filing date or if it suspects you made an error. That deadline extends to six years if it believes you underreported income by 25 percent or more.
Why do muscles twitch. When we experience involuntary muscle contraction and relaxation, it is known as a muscle twitch. A muscle twitch is the result of an electronic impulse sent to that particular muscle by a nerve that is out of voluntary control for the moment at least.Muscle fasciculation can exhibit in different forms and in different degrees, but the most common form of the phenomenon is twitching of the eyelids.iabetics may experience involuntary muscle twitches due to the effect of insulin, but there are other drugs as well, which are known to affect the nervous system in such a way that certain muscles begin to twitch.
A RealAge answered. Your lip twitches when the muscles that connect to your lip contract involuntarily. Muscle twitching or spasms can occur for many reasons and may be triggered by stress, fatigue, or a side effect from a medication. Twitches of lips, eyelids, and calf muscles usually go away within a day or two, but they can sometimes be a symptom of a more serious condition or disease. If your twitch is persistent, it's a good idea to see your doctor.