Why does your hand fall asleep in the day?

Your hand may fall asleep during the day due to pressure on nerves or blood vessels, often caused by awkward positioning or prolonged pressure on the arm or wrist. This can disrupt normal blood flow and nerve signals, leading to a tingling or numb sensation known as paresthesia. Conditions like carpal tunnel syndrome or repetitive strain injuries can also contribute to this sensation. Adjusting your posture or taking breaks can help alleviate the issue.