I know these steroids have nothing to do with 'anabolic' steroids. I just don't know much about them in a medical sense, so thanks for the replies. I find it interesting that Moz constantly wants everybody to believe that he is quite robust and not fragile, physically and mentally, but look at other parts of Autobiography:
"I cannot swallow and I spend months hospitalized, my stomach ripped open, my throat pulled wide, my parents are warned that I'm unlikely to survive." (when 3 years old)
"Heart on backwards, I began to suffer daily panic attacks. My mother is alarmed as my heart seems to be stuck in my throat. I endure the common slipway of prescribed antidepressants when I am really only reacting quite naturally to my humiliating surroundings - plus lack of air." (when 17 years old)
"It is too much to bear, and in this dank November air I hear voices of people who are not there." (visiting Jon Daily's grave)
"My doctor had prescribed a 'mood' tablet known as Pastalin, with which I scum-wrestle for a few dreadful months, and I begin not to recognize myself - saying things that I would never usually say - and my recalcitrant behavior is noted with concern from passers-by." (1987)
"Life plops me at 2 Caroline Place, an odd little house in Bayswater that will be home (of sorts) for 1989, a disturbingly dry summer when the heat, mixed with the pollution of the Bayswater Road, brings on the panic attacks that I'd thought long since gone. I sleep with the bedroom windows open, but the air feels defiled and contaminated."
"It is this inescapable fire that makes me ill after just one week, and sine I cannot breathe my doctor prescribes an inhaler. I walk around the inferno from kitchen to hallway, my breathing heavy and my eyes permanently crossed."
"I, too, subside into fatigue, and it is a fatigue I now feel every moment of my life." (2009)
Maybe he is robust in the sense that he keeps moving despite all those 'difficulties'. (Only if all this is true, of course)