Should I wear tight frenchie underwear .i m 21 years old .If no then why.

Question

Hello-
Wearing tight underwear is not recommended for men who hope to father children. A lifestyle study  found that wearing constrictive underwear is a greater inhibitor to sperm motility than other lifestyle choices such as consuming alcohol or smoking tobacco. 
Research suggests that groin constriction can lower sperm levels. Tight underwear tends to increase temperatures around the scrotum, and this can inhibit sperm production. Sperm viability is influenced by several factors, including body heat stability.

Rahul Gupta · Accepted Answer

Hello-
Wearing tight underwear is not recommended for men who hope to father children. A lifestyle study  found that wearing constrictive underwear is a greater inhibitor to sperm motility than other lifestyle choices such as consuming alcohol or smoking tobacco. 
Research suggests that groin constriction can lower sperm levels. Tight underwear tends to increase temperatures around the scrotum, and this can inhibit sperm production. Sperm viability is influenced by several factors, including body heat stability.