Fighters with power in their limbs are easily the most entertaining.
They're also the most unpredictable as any of their fights can end in an instant.
Some fighters just have the uncanny talent to put their opponents out with a nasty punch or kick. Everyone has the ability to do it, but some have made it into an art form.
Many of the men on this list will be looking to use their power and skills to get to the top of their division. Here are five power-punching fighters to watch in 2013.