My back hurts, my knees hurt and I struggle with my flexibility. I know that loosing weight is the key, I am fed up of hurting, too. Good luck today. I have done this diet before and I try to get into ketosis first by eating low carb, high fat for a couple of days, it makes the transition easier. I usually eat tuna and mayo or chicken salad with mayo for a couple of days. The fat and protein keep me full fir longer.
My top tip is, dont give in, the first little nibble of something is a slippery slope to falling off the wagon. Every time I am tempted to eat something I try to image how sad I will be in the morning when I wake up and realise I have blown it.
Also keep busy, tidy drawers, sew something, clean the skirting boards - anything to keep your mind off food.
There is a stall somewhere between week 2-4 dont let this put you off, your body is loosing inches if not weight.
If you wobbly bits get more squishy and look worse in a few days you will have a whoosh and suddenly be down 3 lbs.
When your period is due you will gain or stall but this is just water, dont panic!
I cant weight any more than monthly as it messes with my head.
I just need to take my own advice now! I find having a set deadline helps as its a hard way of loosing weight but actually when you go back to food you will find this was the easy bit as you just don't eat anything other than your packs so its simple, no thinking or counting.
Dont let yourself get too hungry but start your packs as late as possible.
If you have to eat say at an event eat a tiny amount of chicken and something green but no carbs. DO NOT DRINK, it gets you wankered, makes you really ill, really quickly, ruins ketosis and is dangerous.
Good luck with today.