Ah, the everlasting conversation on how to lose weight. Weight has been my middle-to-old-age windmill.
What is the duration of your fast?
I used to fast in my late teens to early 20s to try to improve my ability to burn fat (based on reading about training studies of Scandinavian Nordic skiers from the 1970s). My fasts lasted 24-72 hours, though generally 36-48 hours. At that time, I probably weighed about 125 lbs. I won't ever see 125 lbs again, but I'd like to get down to 140 lbs or so. A month or so ago I tried a 36 hour fast, 9:30p on a Sunday through 9:30a on a Tuesday. I rode 30 flat, easy miles on Monday and Tuesday morning and the result was a little dizziness on Tuesday's ride and a loss of about 3 lbs.
Gained back a pound this week.
Might try another 36 hour fast in May in preparation for the National Senior Games in June.