the most obvious is stinky breath and a moutt that tastes like a badgers armpit another sign is your (physical) appetite decreases , you may notice your stomach doesn't rumble as much , although mentally you may stll crave food ... hope that helps
I'm really lucky in that I have never suffered with the horrible breath or the dreaded furry tongue. Although I used to get a metallic taste in my mouth.
The physical hunger does disappear but the 'head' hunger can last for ages - mine did. I also had bursts of energy and felt 'high' some of the time if that makes sense.
I generally felt like crap when i was going in to ketosis, it felt like I was going down with a cold, went to bed earlier and when I woke up the next day i felt really good!
thankyou everyone for your replies... i might have to wait a little longer, as i dont feel like im getting any of those......
we will just have to wait and see.... thankyou