Watermelon and cucumber are both around 92 per cent water, which is why this glass goes down so easily when it is warm. One lime lifts the whole thing and adds a hit of vitamin C. It is light, low in calories, and it gives you fluid and potassium rather than anything faddy.
Buy a watermelon that feels heavy for its size and sounds hollow when you tap it. A creamy yellow patch where it sat on the ground is usually a sign of a sweet one. Cucumber skin carries a little vitamin K but can taste bitter, so peel it if yours is thick or waxed. The juice settles as it sits, so give the bottle a shake before you pour the second glass.
Keyword cucumber, detox, hydration, lime, low calorie, summer, watermelon