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Fast Diet, Fast Exercise, Fast Improvements

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Diet & Exercise, Optimized

This is Dr. Michael Mosley. He originally trained in medicine with the intention of becoming a psychiatrist, but he grew disillusioned with psychiatry as it was practised, and ended up pivoting completely into being a health educator, in which field he won the British Medical Association’s Medical Journalist of the Year Award.

He also died under tragic circumstances very recently (he and his wife were vacationing in Greece, he went missing while out for a short walk on the 5th of June, appears to have got lost, and his body was found 100 yards from a restaurant on the 9th). All strength and comfort to his family; we offer our small tribute here today in his honor.

The “weekend warrior” of fasting

Dr. Mosley was an enjoyer (and proponent) of intermittent fasting, which we’ve written about before:

Fasting Without Crashing? We Sort The Science From The Hype

However, while most attention is generally given to the 16:8 method of intermittent fasting (fast for 16 hours, eat during an 8 hour window, repeat), Dr. Mosley preferred the 5:2 method (which generally means: eat at will for 5 days, then eat a reduced calorie diet for the other 2 days).

Specifically, he advocated putting that cap at 800 kcal for each of the weekend days (doesn’t have to be specifically the weekend).

He also tweaked the “eat at will for 5 days” part, to “eat as much as you like of a low-carb Mediterranean diet for 5 days”:

❝The “New 5:2” approach involves restricting calories to 800 on fasting days, then eating a healthy lower carb, Mediterranean-style diet for the rest of the week.

The beauty of intermittent fasting means that as your insulin sensitivity returns, you will feel fuller for longer on smaller portions. This is why, on non-fasting days, you do not have to count calories, just eat sensible portions. By maintaining a Mediterranean-style diet, you will consume all of the healthy fats, protein, fibre and fresh plant-based food that your body needs.❞

~ Dr. Michael Mosley

Read more: The Fast 800 | The New 5:2

And about that tweaked Mediterranean Diet? You might also want to check out:

Four Ways To Upgrade The Mediterranean Diet

Knowledge is power

Dr. Mosley encouraged the use of genotyping tests for personal health, not just to know about risk factors, but also to know about things such as, for example, whether you have the gene that makes you unable to gain significant improvements in aerobic fitness by following endurance training programs:

The Real Benefit Of Genetic Testing

On which note, he himself was not a fan of exercise, but recognised its importance, and instead sought to minimize the amount of exercise he needed to do, by practising High Intensity Interval Training. We reviewed a book of his (teamed up with a sports scientist) not long back; here it is:

Fast Exercise: The Simple Secret of High Intensity Training – by Dr. Michael Mosley & Peta Bee

You can also read our own article on the topic, here:

How To Do HIIT (Without Wrecking Your Body)

Just One Thing…

As well as his many educational TV shows, Dr. Mosley was also known for his radio show, “Just One Thing”, and a little while ago we reviewed his book, effectively a compilation of these:

Just One Thing: How Simple Changes Can Transform Your Life – by Dr. Michael Mosley


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