Prep the produce. Rinse blueberries and spinach well. Peel the ginger.
Roughly chop the cucumber. Zest about ¼ teaspoon of the lemon, then squeeze the juice.
Blend the base. Add blueberries, spinach, cucumber, lemon juice and zest, ginger, and ¾ cup water (or coconut water) to a blender. Blend on high until smooth.
Adjust the texture. If it’s too thick, add more water a little at a time.
If you prefer a classic juice texture, pour through a fine mesh strainer or nut milk bag and press gently to remove pulp.
Add the chia. Stir in chia seeds and let the drink sit for 3–5 minutes. This thickens slightly and adds fiber, which helps steady energy.
Taste and tweak. Add a few mint leaves or a pinch of cinnamon if you like. If you want it colder, blend with a few ice cubes or pour over ice.
Serve. Pour into a glass and enjoy right away for the brightest flavor and nutrient impact.