A smart wearable system is like a machine (wearable tech) that you can wear to track things like how far you have walked, how many steps you have taken, and how many calories you have burned. The system can measure things like heart rate, and other biometrics like body temperature and glucose levels. It can also remind you to stay active and store data. This makes it easier to keep track of your health and activity levels. So it's kind of like having a mini-computer with you all the time, but much smaller and lighter!