Dear HCM user Masturbating is a normal phenomenon and there is nothing you should be concerned about. As you are not sleeping properly I would advice you to follow some simple sleep hygiene steps. Avoid napping during the day. Avoid stimulants such as caffeine, nicotine, and alcohol too close to bedtime. Exercise regularly in morning or late afternoon. Stay away from large meals or stimulating activities close to bedtime. Establish a regular relaxing bedtime routine like reading, calm music. Practice relaxation, yoga. Do not bring your problems to bed. Associate your bed with sleep by using it just for that and not for watching TV, laptop, mobile. Sleep and wake-up at fixed timings. If the jerk just happened once its nothing to be concerned of. But if occours repeatedly you need to be evaluated for myoclonic jerks, a kind of seizure for which treatment is available. Hope your sleep regularizes and you donot have these jerks again.