Luiz is ready to run until he drops to ensure a top-four finish for his team and qualification for next season's Champions League.
He said: "Here at Chelsea we don't have as many players as the other teams. We have maybe 22 or 23 in our squad when others have 30.
"That makes things difficult for the coach because he does not have so many options when we are playing a game every three days.
"But I am OK. I'm only 25 years old and my legs are feeling good.
"Sometimes before a game I might feel tired but the minute I am on the bench or not involved in a game at all, then suddenly I'm not weary at all!
"For me, it's not mentally or physically tiring.
"It's amazing. I don't like to train because that's boring but I love to play games and I would play a match every day of the week if I could.
"We have had some good results lately and West Ham is another big game for us so we have to keep winning."