Clay Guida is currently preparing for the biggest fight of his career.
Clay has been with the UFC for a long time now and is currently riding a three fight win streak.
As a result of his recent success, Guida has earned himself a shot at former WEC lightweight champ Anthony Pettis.
Pettis is a more technically skilled fighter than Guida so, if Clay wants to pull off a win here, he's going to have to fight this fight his way.
Luckily, making other fighters fight his fight is something that Guida is very good at doing.
Clay fights at a relentless pace, sticks on his opponents and wears them down. The reason he's able to utilize this strategy so effectively is Clay has a seemingly endless gas tank.
Cardio is an important thing for any fighter. Frequently we fighters defeating more technically skilled opponents because they are able to outwork them.
With that in mind, let's take a look the top 10 fighters in the UFC with limitless cardio...