Even when Matthew McConaughey looked deathly skinny he was secretly plotting to immediately pack on the weight and regain his famous physique … and TMZ has learned how he did it in under 4 months.
By now you’ve seen the pics — McConaughey looking ripped again … after dropping nearly 30 pounds last November to play an AIDS patient.
According to our sources, even though McConaughey looked like an extra on a Sally Struthers infomercial … he was still pumping iron to keep his muscles intact.
So when it was time to get jacked for his next role … we’re told MM simply added weight by stuffing his face with lots of fish, asparagus, eggs, nuts and sweet potatoes.
Our source described the process as “very well planned out.”