The jolt you feel is more than likely the muscles relaxing after being tense. If you notice, sometimes your body or just your legs will do this just as you are about to fall asleep. It is a normal reaction and I wouldn't get too worried about it unless you start having other symptoms that accompany it. Try to relax more and get more rest. Good luck.
Hi, welcome to the forum, most people have experienced a sudden jerking movement upon falling asleep, often accompanied by a subjective sensation of falling or twitching. Such occurrences are known as benign hypnic myoclonus or sleep starts.
Rarely, night starts can become unusually violent, very frequent, or repetitive, and confused for seizures. The phenomenon is restricted to sleep, and always or virtually always in the transition between sleep and wakefulness, and is not associated with other phenomena.
To conclude, you need not worry; it will not harm your body and will wear off over a time. Maintain good sleep hygiene, be positive. I suggest you to consult sleep specialist for more information. Take care and regards.
I have been on lexapro and I am a pharmacist. I've been getting the same symptoms you have I decided to wean off the lexapro. I do not recommend this for you as I am just sharing my experience. I personally think the lexapro may be causing this even though it is not in the literature I feel that my twitches are going away. I'd like to research this more.