In medicine (obstetrics), cardiotocography (CTG) is a technical means of recording the fetal heartbeat and the uterine contractions during pregnancy. The machine used to perform the monitoring is called a cardiotocograph, more commonly known as an electronic fetal monitor (EFM).
I think the reason why long distance relationships donât work is because of a lack of commitment from both parties and because often the relationship drags on without either person ever planning to move (so no light at the end of the long distance relationship tunnel).
One of the best answers to the question of why donât long distance relationships work is the fact that trust issues always develop. Some couples manage to keep them under control, but most people in this type of relationship face difficulties when it comes to trusting that their partner isnât cheating on them.