Blonde On A Diet

A very heavy blonde went to the clinic to lose weight. The Doctor told her to eat what she normally ate for three days, then skip a day. Come back in four weeks and you will have lost at least 4 pounds.
 
She came back four weeks later, 30 pounds lighter! The Doctor looked at her surprised and said "How do you feel now"?

I'm so sore and tired. My muscles ache all over!

Doctor: From not eating?

Blonde: No from skipping!