This sensation occurs in the hands because there are so many nerves. For this reason, it's best to consult your doctor if the condition persists, as this may indicate that your body needs nutrients such as B vitamins.
Why should you worry if your hands continue to go numb? If your hands frequently fall asleep, it could be a sign of migraines, rheumatoid arthritis, hypothyroidism, diabetes, herniated discs, cervical osteoarthritis, or other problems that only a doctor can diagnose.
It's important to remember that this doesn't only happen with the hands, but also with the legs, as many nerves are concentrated there. For these reasons, attention should be paid to these signs to prevent the development of the aforementioned diseases.
It's important to follow a proper diet, sleep at least 6 hours a day, and, most importantly, exercise regularly to prevent your body from getting this disease again.