1. Smoking can shorten your penis
Smoking can damage the blood vessels and hinder proper blood flow – which can have a knock-on effect on erections.
But all hope is not lost, as quitting cigarettes can help men achieve firmer erections faster.
2. Stop trying DIY blow jobs
Only three in a thousand men are actually flexible enough to pleasure themselves orally, according to research of sexologist Alfred Kinsey.
Plus you should probably just try to get out more.