Kumi loses weight by eating smaller portions, working out/dancing a lot, and never eating after 6pm. She said on Most Hated Food that she and misono both have problems with weight gain and then losses, her weight fluctuates a lot. I think she looks amazing right now!
The thing about TABOO was that when it came out, the kuu fans didn't really have much hope for a new hot song after the scandal. Everyone thought she was going to be a granny or just a ballad singer, and she proved that she still had the ****tiness in her. TABOO shocked a lot of us

it's personally not one of my favorites.. I prefer Always. It's a good song though.