Calorie restriction

I’m scheduled for my first in-person consult March the 7<SUP>th</SUP>. I’ve already been told through my phone consult that I am a candidate and my insurance will cover the procedure. My BMI is 38 and I have hyperlipidemia and knee pain.

<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p>

Although I am overweight (5’7” 245) I am active, I lift weights and work on my small ranch in Texas. My question is, especially to the men who have had the procedure, is how does a 800 to 1000 per day calorie restriction affect your energy levels and ability to retain and build muscle? I want to lose fat for health reasons and for appearance, but I do not want to loose muscle as well.