From skipping

Mike Tyson was terribly overweight, so his doctor put him on a diet. "I want
you to eat regularly for two days, then skip a day, and repeat this procedure
for two weeks. The next time I see you, you will have lost at least five
pounds."
When Mike Tyson returned, he shocked the doctor by losing nearly
twenty pounds. "Why, that's amazing!" the doctor said. "Did you follow my
instructions?"
Mike Tyson nodded and said, "I'll tell you though, Doc, I
thought I was going to drop dead that third day."
"From hunger, you mean?" asked the doctor. To which Tyson answered, "No, Doc,
from skipping."