He has been hopping from one city to another promoting his latest flick "RA.One". But for his 46th birthday Wednesday, superstar Shah Rukh Khan says he wants some relaxed time with friends and family.

"I am just really very tired. I have just come in from Toronto and LA. The race has exhausted me. So I am just going to go, hang out with my friends. I will be be in Mumbai with my friends and family," Shah Rukh told reporters at the red carpet of the F1 after-party here late Sunday.

The actor, who plays a superhero in "RA.One", has been acting like one in real life, thanks to the number of promotional and marketing activities he planned around the release of his most ambitious home production.

After multi-city promotions in Mumbai, New Delhi, Kolkata, Bhopal, Vadodara, Chennai and Bangalore, Shah Rukh went to Dubai, London, Toronto and Los Angeles.

The exhaustion reflected in his eyes and in his voice too.

Though he was excited about attending the F1 party where international pop star Lady Gaga performed, he was quite unsure of his own birthday bash.

"I don't know (whether I will throw a party or not)...let's see," Shah Rukh told. Shah Rukh's wife Gauri was also seen at the party's red carpet.