How does the body provide energy without carbs?

When the body is low on carbohydrates, it can use fat as an alternative energy source through a process called ketosis. During ketosis, fatty acids are broken down into ketones, which can be used by the brain and other tissues for energy. Additionally, the body can convert protein into glucose through gluconeogenesis, allowing it to sustain energy levels even in the absence of carbohydrates. This metabolic flexibility enables the body to adapt to different dietary conditions.