A study conducted by the University of Texas Health Science Center at Houston shows that men over the age of 20 who drink two or three cups of caffeinated coffee report less instances of erectile dysfunction than men who laid off the bean.
One of the authors of the study, Run Wang, explains that caffeine shares many properties with ED medication like Viagra. The stimulant found in both relaxes the arteries, and allows for more blood flow into the penis, causing an erection.
Co-author David Lopez found the connection between caffeine and boners was most apparent in overweight men. Excess fat can interfere with vascular function, and reduce blood flow to your D.
Get out there and chug that coffee, boys.
h/t: New York Post