Smoothies are a delicious and convenient way to pack in a variety of nutrients and give your body the energy it needs to power through the day. Here are some of the best foods to add to your smoothie for energy production:

1. Berries: Berries are packed with antioxidants and anti-inflammatory compounds that help to boost energy levels and improve overall health. They are also low in calories and high in fiber, making them a great addition to any smoothie.
2. Spinach: Spinach is rich in iron, magnesium, and potassium, all of which are essential for energy production. It also contains high levels of antioxidants.
3. Avocado: Avocado is a healthy fat that is packed with energy-boosting nutrients such as potassium and magnesium. It also adds creaminess to your smoothie and makes it more filling.
4. Banana: Bananas are a great source of natural sugars, which provide a quick boost of energy. They are also high in potassium, which helps to regulate blood pressure and support healthy muscle function.
5. Greek yogurt: Greek yogurt is a great source of protein and calcium, both of which help to support energy levels. It also adds creaminess to your smoothie and makes it more filling.
6. Chia seeds: Chia seeds are a great source of healthy omega-3 fatty acids, which are essential for energy production. They also provide a good source of fiber and protein which can help keep you full for longer.
7. Nuts and seeds: Nuts and seeds such as almonds, walnuts, and flaxseed are a great source of healthy fats and protein, which are essential for energy production.
8. Protein powder: Adding a scoop of protein powder to your smoothie can help to support energy levels by providing your body with a steady source of protein throughout the day.

When making your smoothie, you can also add other ingredients such as ice, water, or milk to adjust the thickness and flavor to your liking. Remember to mix and match different ingredients to find the perfect combination that works for you.