Think of insulin like a key 🔑 that opens doors to let sugar (glucose) into your body’s cells for energy. When everything is working right, your body makes insulin, the key, and it fits perfectly into the locks on your cells. The door opens, and sugar gets inside to give you energy. But with insulin resistance, the locks on the doors get rusty and don’t work as well. Even though your body makes plenty of keys (insulin), the doors won’t open easily. So, sugar stays outside in your blood instead o