Low in calories and full of water with some fiber, cucumbers are healthful, she said. Cucumbers come in many variations: standard, fat, thick-skinned garden cucumbers; longer, more slender English (or hothouse) cucumbers with thin skin and smaller seeds; bite-size and bumpy gherkins; crisp, compact Persian cucumbers. THEY'RE HYDRATINGAs temperatures rise, cucumbers – which are about 96 per cent water – are an excellent low-calorie source of hydration, Dong said. You can find fermented pickles in the refrigerated sections of grocery stores. Keep in mind that pickles – fermented or not – are salty.