Sir, this is a Wendy's physician's office. You're here for your annual checkup. I am just taking down some basic information before the doctor arrives. Please unclench your fists so I can take your pulse/Ox.
Weight can be altered with behavioural changes. You can lose weight through hard work. Height can't be significantly altered without surgery (or hurting yourself, I guess).
Maybe something like "what's your cup size" may be closer but even that's variable based on diet and exercise.