A jockstrap is an undergarment designed to protect the testes and penis during contact sports or other vigorous physical activity. It consists of a waistband, usually elastic, with a support pouch for the genitalia and two elastic straps affixed to the base of the pouch and to the left and right sides of the waistband at the hip. Here are some reasons why men wear jockstraps:

• Protection: Jockstraps provide protection to the genital area during physical activity, reducing the risk of injury.
• Support: Jockstraps offer support to the genital area, keeping everything in place and minimizing shifting during exercise.
• Comfort: Jockstraps can be more comfortable than traditional underwear during physical activity, as they are designed to minimize fabric and maximize leg movement.
• Hygiene: Wearing a jockstrap during workouts can promote hygiene by reducing sweat and bacteria buildup in the genital area.
• Improved exercise performance: Jockstraps can improve exercise performance by reducing groin strains and keeping genital slip-outs from turning into painful injuries.
• Fashion: Fashion jockstraps have become popular as alternatives to briefs and boxers, and can provide a sexy confidence boost.
• Medical purposes: Jockstraps can be worn for recovery from injury or surgery for conditions such as hematocele, inguinal hernia, hydrocele, or spermatocele.
• Butt-lifting: The strength of the elastic in the rear jock straps can be used to create butt-lifting properties, providing extra support.
• Improved range of motion: Jockstraps allow for maximum mobility and flexibility without compromising on the crucial support that you require.

Its important to choose a jockstrap thats snug enough to support your genitals but loose enough to not chafe. If you play a sport with plenty of speeding projectiles, like hockey, football, and soccer, its recommended to get a cup-style jockstrap.