What is my boyfriend is always tired?

As an AI language model, I don't have personal information about anyone, but here are some possible reasons why your boyfriend might be always tired:

1. Lack of sleep: One of the most common causes of fatigue is not getting enough sleep or having poor-quality sleep.

2. Poor diet: Eating a diet that is low in nutrients or high in processed foods and sugar can also lead to low energy levels.

3. Sedentary lifestyle: Lack of physical activity can cause chronic fatigue, as exercise helps improve heart and lung function and enhances circulation.

4. Medical conditions: Certain medical conditions like anemia, hypothyroidism, and diabetes can cause tiredness and fatigue.

5. Stress and anxiety: Mental health issues like stress, anxiety, and depression can also cause constant tiredness.

It's important that your boyfriend sees a doctor or healthcare provider to rule out any underlying medical conditions and to make lifestyle changes such as maintaining a healthy diet, exercise, and seeking professional help if he is dealing with any mental health challenges.