How does blood flow to the penis to get an erection? The same way blood flows to your heart–through arteries, those pesky passages that get clogged by eating unhealthy food.
No boner? Bummer.
But by all means, enjoy that Valentine’s Day steak you ordered. Eat up. You’re only hurting yourself, the environment, starving people around the world, oh, and complicit in the needless inhumane treatment and deaths of innocent animals.