The 25-year-old claims he is in the best shape of his life.
"Okay, my shape does not look like I'm stick thin or anything like that, I know that myself. But fitness-wise, I don't think anyone could question me," he told liverpoolfc.tv.
"If you can get stats or if you asked the physios and fitness staff here they'll say that I'm in the top one or two in terms of metres covered, but people will still call it as they see it. Not everyone has the same thoughts about each player but if anyone wants to know about me they can call the club and ask for the stats."