Hi BYOUK,

No idea to be honest – but my initial thoughts are:-

1) that when you are napping you are likely to be using less calories than if you were doing something else (unless it is snacking), so you may end losing less weight than normal.

2) if the napping upsets your normal sleep patterns it could be counter-productive. I believe studies have shown that the way the body processes food is adversely affected by poor or insufficient sleep which upsets your circadian rhythms and that in turn affects how various hormones are released which can make you feel more hungry, even though you don’t really need the food.

I guess a lot depends on how long the naps are for, if they make you feel more or less energetic when you wake from them, and if you still sleep well at night.

The above is not too much help I suspect.

(FYI My background is over 7 years on 5:2, with my weight over 14 kg down from where I started, and with an average BMI of 23 over the last 6 years.)

Hm, I haven’t really thought about when to nap. I just do it, when I feel like it, but I also experienced that sometimes it helps and sometines I feel even more tired.
I will observe it with the fasting days and see if it makes a difference. 🙂