Indeed, one study even suggests that a shift from tight-fitting jockeys, which can press the scrotum against the body, to boxers, which allow it to dangle, can improve some factors of sperm quality.

• 的确，曾经有研究建议，男性由紧身内裤改穿平口内裤，让阴囊不受挤压而自然垂吊于体外时，可让精子的品质提升。