The England international was ruled out for most of United's pre-season fixtures and has had a stop-start season due to injury. Since his return however, the striker has bagged three goals in all competitions and was the star for his side's 4-2 win against Bayer Leverkusen in the Champions League.
The 27-year-old striker has heaped praise on Moyes, the former Everton boss who replaced Sir Alex Ferguson earlier in the summer after expressing his joy of working under the Premier League champions' new manager.
"I feel great. The training is a bit different under the new manager - I remember it from Everton, it's more intense. That's helping me. I feel good and am glad to be out playing," Rooney told the Mirror.
"He's a great manager and thoroughly deserves this job because of what he did at Everton," said former Toffees star Rooney. "It's good to work under him and hopefully be successful together," he added.
Rooney's future at Old Trafford was uncertain this summer after he expressed his desire to leave the club, and was being linked with a move to Chelsea. The striker was not allowed to leave before the transfer window shut and now seems determined to improve his game for the English champions.
"I've put my head down and worked hard and tried to do everything right. I've tried to show the right attitude. I've always felt that's a really important thing to do. That's paying off for me on the pitch. I feel fit and ready to do well," the striker said.
"I feel good. I've had some good training the last few weeks. It's been stop-start with the injuries, but I've just kept my head down and worked hard and now I've played and got some goals," Rooney concluded.
Meanwhile, United midfielder Michael Carrick was full of praise for Rooney after describing the striker's performance against the German club in the Champions League as "untouchable."
"It was probably Wayne's best performance that I've seen for a while. It's great to have him in that form - he can be untouchable when he's like that. To have lads like that in your team is brilliant," Carrick told the club website.
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