The Argentina forward took part in his first training session with the Bianconeri and admits he was not used to such rigorous work in England
The €12 million signing, who joined from Manchester City earlier this summer, is keen to prove to fans that he can up his game in the upcoming Serie A season.
"Well, after my first day of training I realised that I’ll certainly have to run much more than in England," he told reporters.
"Feeling the passion of the fans is important for me. I came here to work hard and it took me just half a session to realise I’ll have to work harder than in England."
Tevez will wear the No.10 shirt for the Bianconeri, previously donned by club legend Alessandro Del Piero, but he stressed that such a prospect is exciting rather than putting him under pressure.
"That doesn’t weight me down," the Argentine, 29, added. "It makes me feel important to receive such affection.
"I have joined a club that are ready to play for an historic third straight Scudetto and one that are also capable of challenging for the Champions League."