This is why so many Anorectics die from cardiac arrest. The cardiac muscle is consumed during the catabolic process and it can no longer pump blood due to a lack of muscle tissue. Death results.
Yes... I got close to this and it was very bad. Low restricting and doing only catabolic exercise is one of the most dangerous things one can do. I hope it didn't appear I was recommending this. I was simply answering the question, but would never recommend restriction plus doing intense catabolic exercise. I think if one wants to lose weight and muscle through catabolic exercise its essential to eat enough to prevent this from happening