United Kingdom, Jan. 15 -- Guy Fieri has described his horror injury as the "worst thing he's been through" in two decades.

The 57-year-old celebrity chef has been in a wheelchair for the last couple of months after suffering a scary fall down a flight of stairs which left him with a torn quad muscle, and he has been sure to take medical advice on his recovery.

He told PEOPLE magazine: "My doctors are all like, 'We know you want to get after it, but let's not go back to where we were.'

"And I'm like, 'We are never going back to that!' That was the worst thing I've been through in the last 20 years.

"But now I'll be up and ready and healthy and rolling by the time we hit the Super Bowl for sure."

Next month, the Food Network star is s...