They are both excellent sources of dietary fibre, which protects the heart by lowering blood pressure and reducing LDL, or bad cholesterol, levels.

Once inside the small intestine, the fibre attaches to the cholesterol particles, preventing them from entering your bloodstream and travelling to other parts of the body.

Both polyunsaturated and monounsaturated fats can help lower blood cholesterol levels, making avocados a heart-healthy food.

According to research published by the American Heart Association, consuming one avocado per day can lower your levels of low-density lipoprotein (LDL), otherwise known as “bad” cholesterol.

Studies have found that watermelon-fed groups exhibited significantly lower serum triglycerides, total cholesterol, and low-density lipoprotein cholesterol