Muamba collapsed whilst playing in a FA Cup tie against Tottenham on March 17 and his heart stopped for 78 minutes.
However, the 24-year-old's stunning recovery after regaining consciousness allowed him to be discharged from hospital a month later and he was invited to take part in a short ceremony at the Santiago Bernabeu on Sunday, prior to kick-off in a charity match between Real Madrid and Manchester United legends.
"I am happy to be here and the fact is I continue to feel fine. I am improving slowly but surely," he told AS.
"At the moment I am not doing exercise, I am just enjoying life and travelling. It is a great privilege to be able to live with the assistance of a respiratory machine or something like that. It is fantastic.
"I am making small steps every day. I am still being medicated and we will see what happens. I have to co-ordinate with my doctor and see what he says but I'll never say never."
The former England Under-21 international also spoke of his recollection of the day he collapsed.
"The only thing I remember about the game is running back and falling," he said. "I felt dizzy whilst I was moving back, very dizzy.
"It was a strange sensation, I felt like I was running inside someone else's body and then I fell. My head hit the ground twice and I lost consciousness. I was dead.
"I didn't feel pain in my body or my head. I didn't feel anything. That happened on the Saturday and I didn't wake up until the Monday.
"I have never watched the video because I am not yet ready. Now I intend to enjoy life. It is a miracle that I can do things like travel. It is a miracle because I shouldn't even have lived, so everything that comes now is a bonus."
The day after Muamba's collapse, Real Madrid players took to the field for their game against Malaga with messages of support printed on T-shirts and he is especially thankful for the support he received from the football community worldwide.
"When I was in hospital Madrid sent me a shirt signed by all the players and it was a gesture I appreciated a lot," he said. "Barcelona also sent me a shirt signed and dedicated by (Lionel) Messi.
"I never thought I would get to step on this pitch. To do so in this manner is an honour.
"It is the first time I have been to the Bernabeu and to do so surrounded by some of the best players ever, I don't have the words to describe it. All the support I have received gives me strength."
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