Well I noticed that if I have a yogurt in the morning containing some carbs, I can then go low carb, but if my first meal is only protein I get really nauseous.
I learned this years ago when I used to drink oats blended with whey, and then lift weights. The whey would burn first and I would get really nauseous and week.
So now I have to have carbs before and during my workout or I will get sick and be too weak to have good form. The funny think is if I don't eat at all I don't get sick and don't even notice really.
Any thing really sweet makes me nauseous as well, I don't really consume sugar at all because I'm a natural fatty. I ended up having timed glucose testing done and I'm the total opposite of diabetic. I forgot what that means thou, I think my sugar gets lower from glucose.
Gonna try low carb again this week. 100 on non work out days and more on work out days? What's a good amount on a lifting day, so I can actually lift.