The 49-year-old actor was also concerned about Aamir Khan, who injured his shoulder while shooting for Dangal and has been advised bed rest for a week.
Of the precautions he will take while shooting for Sultan, considering Aamir was injured, Salman said: "I will not use a duplicate. I will make sure I do it (action sequences). I will train hard for it. I will have to get bigger and stronger which is difficult. I am 88 kgs now. I will have to reach 94 and then come down to 70 again. It will be all muscles." (Also Read: Salman Khan Has Just '10 Days to Get Back Into Shape' For Sultan)
The film, which will be directed by Ali Abbas Zafar, will release on Eid next year.
Meanwhile, Salman expressed grief over the death of veteran actor Saeed Jaffrey, with whom he worked in a couple of films.
"He was a fantastic person and I have known him and his family for a long time. I think he died peacefully in his sleep. May his soul rest in peace," said Salman.