New Wales fitness coach Andrew Hore has revealed Wales players will have to work on their anaerobic fitness and leg strength.
The 30-year-old, who worked with Wales coach Steve Hansen at Canterbury, has been putting players through their paces with a series of physical tests since arriving on Monday.
One of his main roles will be to form close ties with club coaches to establish a structure to improve players' fitness levels.
The Kiwi believes Wales are generally in good shape ahead of next year's World Cup in Australia.
"Wales had a rough time during the Six Nations but have improved during the last few months and recently ran South Africa close.
"If we can start building now and get the structure right this side can grow.
"At the moment only about half of the squad have been tested and we do need to look at anaerobic fitness and leg strength.
"It is too early to judge overall fitness levels but, from what I have seen, there is a huge amount of potential in the side.
"I am testing the lads and the way they train and co-ordinating a plan to improve overall fitness levels.
"I will be looking to forge close relationships with the club trainers and that is the key.
"If we can start working together for the good of the players then we can start getting some good results."
As the countdown continues for RWC2015, Tournament Chief Executive Debbie Jevans visited the Millennium Stadium to discuss preparations for the eight matches and reveal the positive news that 100,000 tickets for games at the home of Welsh rugby have sold in the last seven days.
Jason Harries is targeting a first win on the World Series circuit this season with Wales. The series returns to action this weekend in Dubai where Harries is part of a team hoping to build from its efforts in round one in October.
Wales skipper Jevon Groves says his side have addressed a few points from Gold Coast and aim to 'hit the ground running' in the next two rounds of the World Series, kicking off with this weekend in Dubai before heading off to South Africa next week.
Wales Sevens manager Steff Thomas is hopeful his side can build from a quarter-final spot in the opening round of the World Series in Australia when his side take part in the forthcoming double header in Dubai and South Africa.