Buy now £130.00, Carhartt WIP When it comes to men’s trousers, Dickies is always at the top of my list. Though my favourite silhouette is the 874 work pants, the Johnson Cargos are a close second.

But Prof Pacey told the BBC: "Potentially switching from tight to loose might help some men who are on the lower edge of sperm production. "It shows that tight pants have an effect and shows there ...