Changing the times of key meals can shed body weight and cut the risk of heart attack, says a study.
In tests, taking a later breakfast and earlier evening meal led to lower levels of body fat, cholesterol and blood sugar within a few weeks - all thanks to the longer overnight "fasting" time.
For the study in next Wednesday's Trust Me, I'm a Doctor on BBC2, a group of men and women carried on with their normal diets, but half ate 90 minutes later than usual in the morning and 90 minutes earlier in the evening.
Study chief Dr Jonathan Johnston, from the University of Surrey, said the results showed that a shorter feeding period and a longer time spent fasting helped shift weight and boost health.
Another test indicated that if a traditional fry-up is eaten in the morning, blood sugar levels go back to normal within two hours. But if the same meal is eaten late at night they stay high.