Even with no exercise if I don't eat enough I feel a little light headed, kind of floaty, and really tired and just overall in a bad mood. Not sure how people skip meals
Rewind few years, doing many more (mostly mountain-related) sports/activities but cca 6x/week, I can wake up on rest day and go on without eating easily till evening without even noticing much difference, water/tea is enough. No headaches after sports unless I do something too intense or its too hot and I completely dehydrate myself. I still eat before some proper effort, didn't ever try doing them on empty stomach.
A friend of mine did interesting effort on his own - he is into half marathons and marathons, and learned his body to not rely on carbs but purely fat. So unlike many others in the races, he isn't replenishing quick sugars but just fat. He enjoys no glycemic swings but rather flat levels of energy
I literally had to go home from work to recover. I didn't try again until I saw this programme here in the UK: https://www.bbc.co.uk/programmes/b01lxyzc
Like a lot of difficult things it takes time and practise. I got better at doing it, but it's still really difficult, especially if the rest of your household don't practise it and you're seeing everyone else around you enjoying their usual meals and food treats.
When I’m at the upper end, about 170, it’s a lot better.
I think I’m basically just, close to that line by default, so not eating can really have adverse impacts on how I feel because I don’t have a lot of fat or muscle reserves.
No idea why my body seems to go into panic mode when it gets hungry though with the extra 20ish pounds I've got