I worked at GNC part-time
I was at a franchise one, and the manager there was one of the reasons why I was influenced to be such a great sales consultant. He was wise beyond his age and taught me strategies of how to sell products by accommodating with each individual to keep coming back. Yes the incentives for certain products were commission-based, but it's a rewarding experience seeing people come up to you, knowing you had a part in their lifestyle change/goal achievements. Very flexible and even if I worked all day, I still get out at 8/9pm depending on which location I was put at. The location also had great customers so that should definitely be a consideration if you were to work at a GNC.
Because I am a girl, there was a lot of judgment and doubt about how well I know a supplement or what they're trying to achieve between specific customers but I was able to convert ignorance and stubbornness through confidently stating facts and advice. There is definitely dead times throughout the day, but there should always be something to work on depending who you work under. Never really a rush but if there is, it may be overwhelming if you're new and alone.
Advice to Management
Franchises are more democratic and let employees be involved in their decision making if they want to make changes, but I have no idea how corps work.
I applied in-person. I interviewed at GNC (Austin, TX) in August 2017.
In person interview with Senior Manager, followed by phone interview with District Manager. Asked basic questions about business management, sales experience, supplement knowledge. Sales experience was most important as the other aspects could be taught.