5. Sparring Isn’t Supposed To Be Brutal
Sparring is an important part of boxing training. Getting a fighter ready requires getting them into the ring and drilling them in a realistic fight environment. However, sparring is usually far more constructive than the movies would have you believe.
In movies, sparring is usually shown as basically a mini-fight taking place behind closed doors. The protagonist will hear about how this sparring partner can emulate their upcoming opponent, teasing an indication of how the later fight will go. Then it erupts into an all-out brawl, and all hell breaks loose.
This is one of the big things that movies get wrong about boxing: sparring is almost always much more constructive than that. Good sparring takes place in a controlled environment, where the coaches retain a level of control over proceedings. Any reputable gym tends to avoid the brutal, unchecked sparring shown in boxing movies (even if only from an insurance standpoint).