Though often regarded as instinct, fighting is actually a skill acquired in the womb, where all babies must defeat their evil selves in order to be born. Further your training with this Groupon.

Choose from Three Options

• $12 for 1 muay thai, jujitsu, or boxing class (a $35 value)
• $49 for 5 muay thai, jujitsu, or boxing classes (a $140 value)
$89 for 10 muay thai, jujitsu, or boxing classes (a $250 value)

Church Street Boxing Gym

A right jab to the jaw sends a mist of perspiration across the blue boxing ring before Joe Louis's eyes. His looming visage peers down at sparring athletes from the walls covered in old flyers, magazine cutouts, and posters recalling the sport's storied history at Church Street Boxing Gym. Legends including Evander Holyfield and Lennox Lewis have trained here, but the staff, which boasts experience in more than 300 combined fights, guides men, women, and children of all skill levels in the combat arts.

Instructors lead muay thai, jujitsu, boxing, and wrestling classes, during which they challenge students in old-school and modern workouts. On the wrestling mat, they demonstrate gripping an opponent in a headlock, and those training for boxing or muay thai skip rope and pummel heavy bags until they agree to stop throwing fights. Athletes can attend classes to prepare for serious combat competition or to get in shape with exercises designed to sculpt the whole body.