In a blender, combine the coconut water, ginger, honey, salt, and lime juice (if using). Blend till combined - about 1 minute.
Pour the mixture through a fine mesh strainer to strain out the ginger pieces, into a larger storage container. Pour over ice and top off with about 2 oz of sparkling water (or however much you prefer).
Notes
Store leftovers in the fridge for up to 7 days, or freeze into electrolyte popsicles.
Lime juice should be omitted if sensitive to citrus/on HYH. Or you can add lemon and lime juice for a lemon lime flavor. It works all ways! You could even just add a slice of lime and squeeze it into the drink versus using the juice.
For high nausea days, I find adding lime, serving over ice, and adding sparkling water hits the spot. It also makes a great mocktail. Using sparkling mineral water will increase the electrolyte content.
If you want to serve this as a sports drink, you can omit the sparkling water and add it over ice.