Can I exercise when intermittent fasting?

Exercising while fasting adds extra health benefits to both the fasting and the exercise. Learn more about how exercise and intermittent fasting are complementary.


Scales are all the same, right? Wrong. The technology within a simple set of bathroom scales has developed hugely, so that not only can they now weigh you more accurately, but they can also calculate your heart rate and body fat, sync with your apps and even track the air quality inside your house. Check …

Medical tests

Before embarking on your FastDay journey, we’d suggest that you do a ‘health audit’ through a simple blood test. These can help identify a range of different health issues, from cholesterol build-ups to key vitamin deficiencies. They can also be used to monitor your progress through fasting – as you lose weight and become healthier, …

Exercise trackers

Exercise trackers are the new must-have gadget for any keen runner or gym-lover. Although the exact features vary device-to-device, they can record your steps taken, level of high-intensity activity, calories burnt and your heart rate. We’d recommend them not only for the ‘gym bunnies’ but also for more casual exercisers – it’s a great motivating …

Recommended Reading

Recipe books What’s 5:2 without food? Even on fast days we still need to eat! These fantastic recipe books make fast days so much better. The Fast Diet Recipe Book – Mimi Spencer Mimi was co-author, with Michael Mosley,  of the original Fast Diet book. This book is packed full of recipes, meal plans, and …

What a great gift!


Do you have a gift to buy for someone who is a faster? A fasting buddy? Or your significant other? We have collected some gift ideas we recommend for the faster in your life. (Don’t worry, we’re not going to suggest you buy them some weighing scales) Coming soon: programs FastDay will soon be launching …

Useful stuff for maintainers

Exercise Many of our maintainers see exercise as the next step – now that they have successfully lost some weight. We suggest registering an interest in our program, coming soon, called LWNGF: Lost Weight Now Get Fit. Register your interest (no commitment) FIXME Many members of our community have taken up High Intensity Interval Training (HIIT), …

Useful Stuff when you are Getting Started

You may want to invest in some Useful Stuff to help you get started with fasting. We are all different, so there is no single ‘starter kit’ that makes sense for people starting out with fasting. We recommend that you consider four investments to help you succeed: Books, especially recipe books if they are your …

What is The Two-Day Diet?

The Two Day Diet is a method of intermittent semi-fasting whereby you eat a very low carbohydrate diet for two days each week and a Mediterranean diet for the next five days.

What is The Every Other Day Diet?

The Every Other Day Diet is the title of a book published by Dr Krista Varady based on her research studies using ADF in overweight subjects.

What is the 8-hour diet?

Restricting your eating to an 8-hour window and fasting for 16 hours is a form of intermittent fasting that may appeal if you find skipping breakfast easy.

What is 5:2? How easy if fasting? Is fasting a diet or is it a way of eating for life?

What is The Fast Diet or the 5:2 diet?

The 5:2 diet (or Fast Diet) was created in 2012 by UK television presenter, Dr Michael Mosley, who investigated fasting as a way to improve his own health. His popular book has sold more than a million copies worldwide.

What is Leangains?

Leangains uses an 8-hour eating window and 16-hour fast combined with strength training to improve body composition.

What is Fast-5?

Fast-5 uses a short, 5-hour eating window, to ensure your body burns fat.

What is Alternate Day Fasting?

Alternating fast days with feast days has been well researched as a method for weight loss and is surprisingly easy to do. It’s good if you are looking for more rapid weight loss.

Inventing your own fasting method

You don’t need to follow anyone else’s method of intermittent fasting. It’s about doing what works for you, and what you can sustain in the long term. Use our guide to invent your own method.