I am SO glad I ran across this thread...I haven't been successfully LCing in the last year and alot of it was because I kept raising my carbs because I thought the leg cramps, heart thumping, low energy was because of eating LC. I also was feeling horrible when I was trying to run and do my kickboxing classes...
I would get EXTREMELY painful leg cramps and feel like I was going to pass out....I didn't want to feel like this anymore and I didn't want to give up the running and kickboxing which I was really enjoying...So I raised my carbs thinking that was the problem....However once I started raising my carbs back came my cravings and I haven't been able to get and stay on track since.

To think this whole time it might just have been a matter of raising my salt intake?!?! Wow, if so--I'm SO EXCITED!! It makes sense!

Now I'm really excited to get back on track with LC and this time I'm going to make sure I raise my salt intake to the 5grams. Hopefully that will be the answer!!

Thanks for all the great input everyone!!