Why do i twitch while i am sleeping?

Many reasons: Movements during sleep can have multiple roots. Some people have involuntary leg movements called plms (periodic leg movements). Others may have disturbed sleep from sleep apnea that can cause momentary pauses in breathing and a brief arousal that come associated with movements. Twitching can also happen as we fall asleep called hypnic jerks. Consider seeing a sleep specialist concerned.

Prevention: Not being able to sleep may indicated sleep problems that can be life shortening or life threatening. The only way to know if there are serious problems is with an overnight sleep test. I encourage you to seek help.