Laura,

One of the things that is difficult about fasting is boredom: so much of our day is spent planning, preparing for, eating and tidying up food that going without leaves a big hole.

I don't want to lose weight, so I won't sign up entirely, but I'll be happy to do up to a 24 hr fast.

Whatever you do, I suggest that you baseline for a few days before, and continue for a while afterwards.

What are you going to measure?

I'm similar to Lindy, in normal circumstances, I can go without food for hours. But if it's available, I can eat huge amounts. My wife is the opposite. (I used to do a lot of mountaineering and long distance cycling. Somtimes you'd almost come to a halt - temporary bradykinesia ? - until you could shovel in calories.)

soccertese,

I agree exercise and fasting are related: the first accelerates the second. If you were to organize something in this area, I'd be happy to sign up.

John