Hey! I'm new here but I am also on my fourth day of fasting. I've not really had any hunger (yet), but yesterday and today I felt very weak and slow. I've had to walk to school and back everyday for 30 min each way in snow at -11C (12F) t0 -25C (-13F) weather, and that's been a strain. Also, I'm taking gym at school (gr. 10) and I've also found that difficult. Same thing with chores and shovelling snow.
That's funny, I've also had a case of hiccups for the past few days! Also, I've noticed that I can hear my heart beating 24/7 really loudly now that I'm on the fast. Weird.
Fortuneately school work hasn't been hard for me, and I've been doing as well on assignments as I've always done (not to brag, but 91% average so far this semester, haha!).