1. Improve immunity.

The abundance of vitamin C in lemon water helps the immune system fight colds. Lemon water also helps boost the body's absorption of iron, as vitamin C can increase the bioavailability of non-heme iron by up to four times, Blackie said.

2. Promotes wound healing.

Vitamin C is one of the most important nutrients for promoting wound healing and keeping bones, tissues and cartilage healthy. Vitamin C also helps neutralize free radicals and inhibit inflammation in the body.

3. Fight skin aging.

Blackie says the antioxidant effects of lemonade help combat free radical damage in the body and ease the aging process. Its rich vitamin C helps amino acids synthesize collagen, which protects the skin and prevents early wrinkles.

4. Reduce appetite.

Lemonade contains soluble fiber pectin, which helps to enhance the feeling of satiety, and thus control appetite and prevent overeating. Keeping you fuller for longer also helps to control your weight by snacking less.

5. Aids in digestion.

Lemon water is good for digestive health, can stimulate the secretion of gastric juices, help digestion, promote defecation and clean up the intestines. Lemon water also relieves indigestion, heartburn and flatulence.