• Upgrades have been completed! Including conversations, 😁😎🏀⚾⚽ Emojis and more.. Read more

Eat Some Exercise Calories on Fasting Days?


Silver Member
Hi all,
Been doing very well on the 5:2 - not perfect every week, but consisent. I've lost 8lbs since end of February.
I have a question for anyone else that does a lot of exercise - I've started doing exercise on my fasting days as I work-out 4/5x a week and struggle to plan it otherwise (i.e., not fasting and gym). Does anyone else do this and if you do, are you eating any extra calories on those days? I do ~1hour of Step or Boxing which is like 600 calorie burn and that's all I've eaten for the day. Then I run 5-7K the morning after before I've eaten anything (I found this to be great - much better than I did before!)
Can't decide if I should be eating my exercise calories or a portion of or just try and stick to 500-600 calories even with the exercise.
Insight or previous experience would helpful!
Thanks all :)
Get Rid of this ad and join in on the conversation for free today! Tap here!


Silver Member
Hey there

I exercise quite a bit too but don't eat my calories back. I think you still have to keep them low unfortunately and not taken what you've burnt off into consideration. I don't tend to worry if I have the odd higher up day though. I think if you feel light headed etc then you should definitely eat more xx


Silver Member
Good work!!! That's one thing I'm not sure about with fasting as obviously want to push myself hard training but think I get more tired than normal on fast days xx


Mostly plant based
Wow! 2 classes! And I was pleased because I ran 3 miles on my fast day! I'm building up my running and don't plan to eat more as I increase the mileage. I have heard that the day after a fast day can be tricky, exercise wise, so the only thing I do is make sure I don't fast the day before and the day of my long run (I do one long run a week, currently 6 miles but I will be building up to 15 miles)

Similar threads