What causes muscle and tendon lock up?

Muscle and tendon lock-up, often referred to as muscle cramps or spasms, can be caused by a variety of factors, including dehydration, electrolyte imbalances (such as low levels of potassium or magnesium), overexertion, or prolonged muscle tension. Poor circulation and nerve compression may also contribute to this condition. Additionally, inadequate warm-up or stretching before physical activity can increase the likelihood of muscle lock-up. Addressing hydration, nutrition, and proper exercise techniques can help prevent these occurrences.