Why do your insides feel like they are vibrating?

The sensation of vibration inside your body can stem from several causes, including anxiety or stress, which may trigger physical reactions like muscle tension or heightened sensitivity to internal sensations. It could also be related to medical conditions such as essential tremor or even side effects from certain medications. In some cases, it might simply be the result of physical activity or fatigue. If this sensation persists or is concerning, it's a good idea to consult a healthcare professional.