Nighttime leg cramps are a painful and surprisingly common issue that can jolt you awake with a sudden, sharp muscle spasm—usually in the calves, feet, or thighs. These involuntary contractions can last for several seconds or even minutes, leaving lingering soreness behind.
Several factors may be behind these midnight muscle attacks. Common culprits include electrolyte imbalances, dehydration, poor circulation, and mineral deficiencies like low magnesium or potassium. Other triggers can be pregnancy, strenuous physical activity, aging, and even certain medical conditions such as diabetes or kidney failure. Some medications may also play a role.
Understanding the root causes is key to finding relief—and sleep.