28/02/2026
Intermittent fasting for weight loss works for some people.
Not because it’s magic.
Not because it overrides calories.
And not because there’s a secret fat-burning switch at hour 15.
It works when it shortens your eating window and, as a result, for some people it then reduces their overall calorie intake each day.
That’s it.
The most common structure is 16:8, where you fast for 16 hours and eat within an 8-hour window. Some people prefer 14:10. Others use a 5:2 approach. The “best” schedule isn’t the one the internet argues about - it’s the one you can stick to without feeling constantly deprived.
It can be healthy if done sensibly. But it’s not suitable for everyone.
If it helps you control snacking, simplify your day and stay consistent, it can absolutely work. If it leads to overeating at night, underfuelling training, obsessing about the clock or chronic under-eating, it won’t.
It’s a tool. Not a rule. Not superior. Not required.
I’ve written an in-depth blog breaking down:
- Does intermittent fasting actually work for weight loss?
- Is it healthy long term?
- What schedule makes sense?
- How it interacts with strength training, running and cycling
- And how it fits with GLP-1 medications
Go to: https://www.simongpt.co.uk/intermittent-fasting-for-weight-loss/
Intermittent fasting for weight loss. Does it work, is it healthy and how should you structure it around training and real life?