Developed in the early 21st Century, the Personal watermelon has a ruby red flesh that is tender-crisp, succulent and sweet. Besides, its rind may be a solid dark green, or variegated with stripes of deep and lime green. While these watermelons are ideal for simply slicing and eating fresh, their obvious benefit is their compact size, allowing for unique and creative ways to display the fruits. When it comes to their benefits, all watermelons contain a unique amino acid called citrulline, which our bodies use to manufacture another amino acid called arginine. Arginine plays a direct role in the volume and direction of blood flow in the body. It’s currently being researched in treating erectile dysfunction, with promising results.