"I cannot count the amount of times I've had a client burst into tears – in a good way!" she said.
"They finally reached a goal or have lost an amazing number of centimetres. When a fighter wins their fight, the feeling is indescribable.
"You feel so proud for them and for yourself. All that blood, sweat, and tears has paid off. You know that win is going to change that person's life."
Crystal said there was never a dull moment training her clients.
"The days are filled with so much fun, and so many amazing achievements."
BFE offers personal training sessions at their studio in Stafford, in the comfort of your home with their mobile trainer, Jess, or online via Zoom. Your session is tailored to you and can include Boot Camp, Boxing, Kickboxing, Muay Thai, Strength and Ccardio.