Hi,
I'm new here. But not new to CD. I did it a year and a half ago and lost all but a stone and a half. Here I am, no gain but still have that stone and a half to lose! I'm on day 3 and it's getting tough, but I know from experience that it gets easier so I'm hanging in.
I exercised the last time I was on CD and fully intend to this time. (giving myself a good week to get into the diet first) I was losing between 3-5lbs a week which for some people happens without exercise, so I'm not sure it would make a remarkable difference. However, exercising did two things for me. 1. Took my mind off food - you can't eat and exercise! 2. Turned me into a gym addict, had I not been exercising the last year and a half I'm pretty sure I would have put on most, if not all the weight I lost on the diet before. Exercising is great for maintenance, I was pretty much eating what I wanted and not gaining because I always burnt it off.
I hope that helps. Stay strong, as my name says, 'quick&painful' it's gonna be tough at times but is gonna be over very quickly. - I hope my positive mental attitude stands the test of time!