Scottish Championhip side Rangers have made a strong start to the season.
The Ibrox club hold a 100% win rate after eight games and have been irresistible in the process, including scoring five times on four separate occasions, and the 30-year old has lauded the work being done at Murray Park.
"There have been a lot of players who have come in, but I think the fact we've all gelled comes from what we do in training,” he told Rangers TV.
“We all know our roles when we step out onto the pitch on a Saturday and I think it helps having clarity in training and knowing what's expected on the pitch.
“That'll have helped the new lads out on the pitch and they've slotted in really well."
"We know it's early and there's a long way to go and we need to do the job every day in training to try and keep the performances high,” he added.
Sheils survived the cull this summer and has grabbed himself two goals so far this season, after proving his worth to his new boss.
Rangers’ summer activities have brought about an almost complete overhaul of the managerial and playing staff, and the club are now reaping the benefits of shrewd acquisitions in both categories.
Warburton’s insight and footballing philosophies have been complemented by the full backing of the board in bringing in his targets and Rangers now have a lean, quality squad tailor made to the manager’s requirements.
The Gers welcome Livingston to Ibrox tomorrow and will be confident of maintaining their perfect start to the season, with Shields no doubt keen to get back among the goals.