Nick Cannon Says His Body Can't Process Protein

Tommaso Boddi, WireImage

As reported by AOL Music, new mom Mariah Carey isn't the only one getting her body back into killer shape. Her husband Nick Cannon is determined to regain his former physique following his recent hospitalization for kidney failure and subsequent surgeries. However, the star on-the-mend admits he's struggling with the daunting task at hand.

Cannon has been making a big effort to get his health back on track, and has already adopted a strict renal diet, limiting fluids, protein, salt, potassium, phosphorous and electrolytes. Now, the music mogul and 'America's Got Talent' host is ready to hit the gym again and has finally gotten the go-ahead from his doctors.

Cannon took to his Twitter page to share his progress with his fans, writing, "My doctor said Today is the first day that I can work out again. I got to get back to fight weight! THE HULK is on his way back [sic]!"