Ben Youngs promises England will not take victory against Italy for granted as they look to keep their Grand Slam dreams alive.
Having impressively overcome Scotland, Ireland and France, Stuart Lancaster's side are on course for a 13th Grand Slam crown.
The trip to Wales on the final day looks set to be the main stumbling block, with England expected to roll over Italy when they come to Twickenham on March 10.
One bookmaker has the Italians as far out as 43/1 to win, although last year's Six Nations clash highlighted the problems the Azzurri can cause.
Leicester scrum-half Youngs started that game in Rome, where England had to come from nine points behind before securing a 19-15 victory.
"There is France and their other biggest game is England," he said of the Italians. "They would like nothing better than to come and ruin the party at Twickenham. I know what they will be saying in their camp.
"It is another challenge and everything seems to be new this season in terms of us lot learning. Now the expectation is on us and it has not been since this group got together.
"I definitely think we have got the right people around us and the right squad to be able to deal with that expectation and make sure we approach it like any other game.
"Everyone is realising this is where we want to be heading in terms of standards.
"(The World Cup in) 2015 is the goal and this is where we need to go and where we need to be, and either you work hard and we are all in it together or you get left behind."
One of the most noticeable improvements has been England's ability to push on in the final quarter.
Asked if he thinks England are the fittest squad in the championship, Youngs said: "Yeah, I do.
"You can feel the momentum of a game. That is why we look to play a high-tempo game, we feel a lot of teams will blow out and we can push on in the last 15 to 20 minutes.
"Psychologically, when you see a team fatigued, hunched over, it is a huge emotional boost, knowing how you are also feeling.
"As a squad, we have said no matter how tired you are, you don't show it. It does have a knock-on effect within your side and also for the opposition."
Gilbert has released a new line of rugby cleats. The Gilbert Virtuo 8S is part of the exciting new product. Check it out.
The entire All Blacks apparel line has been updated for 2013/14. Check out the New Zealand All Blacks polo.
The Nike Tiempo is a solid rugby cleat and one of few styles still made from full-grain natural leather.
The Gilbert Blitz 8S rugby cleat is a great cleat at a great price of $69.99. Get a new pair of cleats today.
A cool looking all black rugby cleat with the high performance adidas is known for. Get in the Gear!
Wear the crest of the British and Irish Lions on your t-shirt. A great look for the summer.
$29.99
The All Blacks Performance t-shirt is black with hints of blue from the training jersey. Very Cool.
The New Zealand All Blacks training jersey for 2013/14. Get in the Gear!
The USA Rugby Pro Alternate rugby jersey is perfect for any fan of the Eagles. Get yours to wear during the summer Test matches.
The NEW All Blacks 2013/14 jersey has arrived at World Rugby Shop. Dare to wear the colors of the All Blacks.
