Avoiding caffeine and reducing the resting heart rate and metabolism, taking certain medication may increase or decrease metabolism, eating high fiber foods like grains and oatmeal, eating less sugar and more starches and eating foods high in amino acid Arginine like a small portion of nuts and seeds every day. (nutritionfacts.org)
Watermelon contains high levels of a compound called citrulline, which metabolizes into the essential amino acid arginine. (healthyeating.sfgate.com)
Nuts are not only yummy but also contain healthy oils, fibre, vitamins and minerals, potent phytochemicals and the amino acid arginine. (superchargedfood.com)