Actigraphy is a tool that helps doctors understand how much you move when you're sleeping or awake. It's like a special watch that you wear on your wrist that has sensors that can tell when you're moving or still. The watch keeps track of all your movements and sends the information to a computer.
Using this information, doctors can learn more about your sleeping habits and cycles. They can use this data to help diagnose sleep disorders like insomnia, sleep apnea, and restless leg syndrome. It can also be used to track how much exercise you get during the day and how it affects your sleep.
So, actigraphy is a very helpful tool for understanding our bodies better and making sure we get enough rest and exercise to stay healthy.