Will Greenwood explains what Eddie Jones and England will be focusing on at their Brighton training camp.
Jones named seven uncapped players in England's 37-man training squad ahead of the autumn series, which involves matches against South Africa, Fiji, Argentina and Australia.
England No 7 James Haskell is still side-lined with a toe injury, and Jones will want to see how flankers Mike Williams and Sam Jones adapt to England training. No 8s Josh Beaumont and Nathan Hughes are also included, while scrum-half Dan Robson and centres Ben Te'o and Joe Marchant have also been given the chance to impress the coaching staff of Jones, Paul Gustard and Steve Borthwick.
Monday was spent with four-time Olympian Kate Howey, who put them through their paces with an intense judo session as Jones continues to learn from other sports in a bid to make England the best team in the world.
With plenty of rugby still to be played before November - including the start of the European Champions and Challenge Cups - Greenwood explains exactly what Jones will be looking to get out of the camp.
"I was lucky enough to spend some time in the Brighton camp before the Wales game preceding the Australia tour," said Greenwood. "It was pretty high intensity - the world of Borthwick, Gustard and Jones is pretty short, sharp and intense.
"There will be some amazing 15 minute defensive bursts and some quality attack. It was all about ball in hand and it is all about pace and high intensity.
"Most coaches, including Eddie Jones believe that you need to train with your heart rate up in order to understand that the skills you are trying to pull off are relevant, as opposed to looking great on the training field then turning up at a Test match, getting hit by Kieran Read, with your heart-rate at 220 - everything goes out the window.
"I'm not suggesting that they will be getting a flogging - what they will be doing is spiking their heart rate. They will be doing no longer than 45-50 minute sessions - in the old black-and-white days it was two hour sessions.
As well as seeing how players perform under pressure, Greenwood says that Jones will be watching how players interact with each other and how quickly they can adapt to playing in different combinations.
"It's getting to understand the little ways you interact with each other," added Greenwood. "To understand that in the midfield if Owen Farrell is injured and Ben Te'o steps in at 12, can Jonathan Joseph or Elliot Daly pick up how he plays?
"It's picking up those little nuances that makes you be able to play better as a team."