Hart told City's website: "Every day in training is brilliant and I think the other lads feel the same. They're breathing down my neck for my shirt and you never know it could be the other way around soon, so I just need to keep hold of it, enjoy it and do the best I can while I've got it.
"The keepers have been different class. We're really close all three of us and both Kasper and Isak have been brilliant. They're both as pleased for me as I would be for them. We need to stick together, it's a difficult position and people come for you all the time, so as long as we stay strong together regardless of who's in goal they'll keep performing.
"Every second of training you can't switch off because you could let one through your legs in training, whereas if you were the number one who's been there for years, he could laugh about it. But here you know down at the other end someone's making a brilliant save, opinions are swaying and people are thinking about it, so you need to be on form all the time."