Nevertheless, the Bulgarian has revealed that hours spent pounding the streets this summer have helped him hit the ground running at the start of what could be a defining season for his career at Manchester United.
Berbatov's match-winning hat-trick against Liverpool at Old Trafford on Sunday took his tally of goals to seven already this season.
Run of form: Dimitar Berbatov rises to seal his hat-trick against Liverpool on Sunday
Criticised for not scoring enough goals in his first two years at United, Berbatov looks a different player already this season and revealed that his fitness work of the summer months is now paying off.
Berbatov said: 'I'm just so happy and so confident at the moment.
'I feel like everything I imagine on the pitch will come true and that feels awesome.
'I have worked hard on my fitness. So hard. I'm not a weights guy, I'm sure you can see by my body. But I have been trying even to work on that. I ran six miles every day during the off season. I watched one World Cup match, went for a run. Then watched another and went for another run. This was my routine.'
Having retired from international football last season, Berbatov decided he had to make changes if he was ever to become the player United have wanted him to become since they paid Tottenham more than £30m for him in August 2008.
Running man: Berbatov is reaping the rewards from his summer fitness regime
'I wouldn't say I have felt troubled here at United,' he said.
'I am not troubled. I am lucky. I have loved my time here.
'But I was disappointed with myself that I could not please all the supporters. I have said before the people of Manchester United are the judges and that is the way it should be. It is their team. I am a guest.A privileged guest.
'This crowd at Old Trafford is amazing. The way I feel right now, I'm not tired. I feel alive.
'I have always said I am so lucky to play here.'
Berbatov has been praised highly by United manager Sir Alex Ferguson this season and Liverpool boss Roy Hodgson described his second goal on Sunday as 'genius'.
However, the player himself will not be watching the highlights at home.
He added: 'I can't watch myself. Even when I came off and everyone was applauding I felt so shy. I love it but I don't know how to react to it.'
Sort it out: Patrice Evra has called on United to tighten up their leaky defence
With United playing in the Carling Cup at Scunthorpe on Wednesday night,Berbatov will not feature again until Sunday's Barlays Premier League game at Bolton.
Defender Patrice Evra has warned that United must stop conceding unnecessary goals.
'We need to stop doing that,' he said.
'We need to stop bringing that nervousness to the situation. We could finish the game with a heart attack.
'It is not easy for the players, the fans or the staff. I am concerned because we conceded two goals again against Liverpool.'
Sort it out or we'll never win the title! Evra hits out at careless Man UnitedBerba is simply incredible! Man United captain Vidic hails hat-trick heroMan United hero Berbatov warns they need to cut out mistakes in title huntMANCHESTER UNITED FC