Janet's weight has always gone up and down. And ...The dancer are doing the job because they're dancers. Janet is still doing her thing even at 53. Using dancer is also smart simply because it conserves the performer's energy and health so she can do the show. She is humans whose doing several shows each week after all as just like other performers. Really, they are also not going to perform well for a few hours at every single show. They're not robots. For me, Id like to see other people who are complaining do what she doing for the past 30 + years and at her age now.