Trainers work by injecting code into the game’s memory. This behavior is indistinguishable from malware to antivirus software. Consequently, Windows Defender or other antivirus programs will often flag trainers as "Trojans" or "PUPs" (Potentially Unwanted Programs).
The answer depends on your playstyle.
In the world of PC gaming, a "trainer" is a third-party program that runs in the background while you play a game. It intercepts and modifies the game’s memory data in real-time. Unlike traditional mods that change textures or car models, a trainer allows players to toggle specific cheats on and off via hotkeys. Nfs Unbound Trainer
A trainer, in PC gaming parlance, is a piece of software that hooks into a game’s memory to alter its parameters. Unlike a mod that changes textures or adds cars, a trainer focuses on manipulating live variables—money, health, speed, and opponent AI. To understand the allure and consequence of trainers in Unbound , one must analyze three distinct lenses: the player’s struggle against grind, the violation of competitive social contracts, and the existential threat to game design philosophy. Trainers work by injecting code into the game’s memory