Wearing tight underwear could lower a man's sperm count and even jeopardize the fertility of men who already suffer from low sperm counts.
Boxers vs. Briefs: What's the Difference?
The Women's Underwear Debate: Could Your Underwear Be Affecting
Difference Between Boxer Briefs & Trunks
Boxers vs Briefs vs Boxer Briefs
Boxers or briefs? For sperm count, one is better, study finds
Boxer Briefs: Styles and More – Mallary by Matthew
Optimizing Male Fertility - Boxers vs. Briefs - Avoiding Hot Tubs
Separatec Men's Underwear 7 Pack Colorful Highly Stretchy Cotton
Briefs vs Boxers vs Boxer Briefs (Men's Underwear Styles Compared)
Boxer Briefs vs. Boxer Shorts? Who Ya Got?
Briefs or boxer shorts? A new study settles the debate