Ryan says watermelon rind has got citrulline, an amino acid that supports the arginine system, and is to do with nitric oxide. Citrulline is converted by the body into the amino acid arginine ...

So if you’re on the hunt for a citrulline boost but aren’t into rinds, you might want to buy yourself a golden watermelon. Lycopene’s benefits to cardiovascular health are not just important ...