Notes

As a personal trainer I'd ask people what are their goals and with that provide I would provide my experience
Most clients really join a GYM and they have no idea what to do, what kind of training to do. That's when a trainer comes in and facilitates that.
To sell them a membership, ask them something they can relate to and go off from there, for example, say "do you have any goals?

There are several ways to calculate your calorie needs as well as protein

1.) Least accurate - by bodyweight

To lose weight, you must cut your daily calorie intake so that the total is less than the daily calories you burn.
Maintainence = 15-16
Weight Gain = 18-20, or more

1) Basal Metabolic Rate (BMR) – This is how many calories your body burns at rest. Even while you rest, your respiratory system is operating, digestive system, and other body processes that require energy (i.e. burn calories). Your BMR represents roughly 65% of your total calorie burn.

2) Activity Level – This is how many calories you burn that requires physical movement, or when your body is in motion. The more active you are, the more calories you will burn. Activity level represents roughly 20% of calorie burn, which depends on how active you are of course.