1.) Some foods that can help a man stay erect as well as sustain stronger erections include; watermelon, dark chocolate, salmon, pistachios, oranges & blueberries, almonds, walnuts & other nuts.
2.) Watermelon contains citrulline, a precursor to nitric acid, which is great for a good erection, as it dilates and relaxes the blood vessels, making it easier for blood to flow to the area. The citrulline content in watermelon makes it similar to other foods like cucumber, bitter melons and gourds.
3.) Dark chocolate is also great for a strong erection as it is packed with flavanols, making it easier for blood to flow through the body.
4.) Salmon is extremely rich in vitamin D, which has been shown to prevent endothelial dysfunction, which is when your arteries, blood vessels and organs aren't able to properly circulate blood flow.