Weight

A friend reminds me that rapid weight loss can also change a person's system, such as Marie Osmond. We often think dropping the pounds is all good, but then one might need to do a carbohydrate load before running a race or dancing a Samba on national TV. I haven't seen any mention of personal trainers for these stars. Dance teachers are not usually trained to watch for the same things. I doubt Maksim Smerkovsky would care.
The moral of the story is to take care of yourself.