Random shivers when not cold or sick can be caused by several factors including anxiety and stress, low blood sugar (hypoglycemia), thyroid disorders, anemia, hormonal imbalances, and neurological conditions. These shivers are involuntary muscle contractions that may also be triggered by emotional responses such as fear or panic attacks, dehydration, or even after physical exertion or eating. Sometimes, the body may produce chills as a response to internal hormonal changes or low body weight that affect temperature regulation. Key causes include:
- Anxiety and stress releasing adrenaline, which activates the nervous system causing shivers.
- Low blood sugar causing the release of hormones that lead to shaking.
- Underactive thyroid slowing metabolism and making the body more sensitive to cold.
- Hormonal changes from menopause or other conditions.
- Panic attacks producing adrenaline rushes causing trembling.
- Dehydration or medications as side effects.
- Mild infections, even without fever, can prompt shivering as the body tries to raise its temperature.
These shivers are generally involuntary and a way for the body to regulate temperature or respond to internal changes, not just external cold. If shivers are persistent or accompanied by other symptoms, it may be advisable to consult a healthcare provider to rule out underlying conditions.
