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Our Staff

Get to know our friendly Fitness Together® Personal Training Staff at Downtown Grand Rapids.

Jennifer Lesinki

Personal Trainer

Jennifer is a Grand Rapids native with a personal training certification and weight loss specialization through the National Academy of Sports Medicine. A life-long interest in health and fitness developed into a career in 2012 when she began teaching kickboxing and cardio group classes. However, It is her passion to help people reach their goals and discover new abilities in a one-on-one setting. She is an avid runner and outdoor enthusiast. When she's not training with clients she can be found on many of the West Michigan running or mountain biking trails.

Melcolm Brown

Personal Trainer

Melcolm is originally from Michigan's northern peninsula. Melcolm has developed his love for fitness through his sports background and competitive mindset. As a child, he participated in Tai Kwan Do, wrestling, boxing, and cage fighting. Melcolm recognizes the importance of a great strength and conditioning program not only for sports performance, but for an overall healthy lifestyle. Melcolm graduated from Lake Superior State with a degree in Exercise Science. He is passionate in helping clients achieve their fitness goals. He looks forward to working with you!

Austin Jimenez

Personal Trainer

Austin received his undergraduate degree from Grand Valley University (GVSU) majoring in Exercise Science. His personal training certification was obtained through National Academy of Sports Medicine (NASM). Austin believes movement is medicine and strives to help each client use exercise as a catalyst to fuel and improve their day-to-day lives. In Austin's free time he loves to strength train, work on mobility, make music, and play rugby.

Derek Hart

Personal Trainer

Derek is a Michigan State University (MSU) graduate with a degree in Kinesiology (exercise science) and minor in Health Promotions. He comes from an active family and likes to fill his free time with tennis, basketball, and hiking. Derek is certified as a personal trainer through the American College of Sports Medicine (ACSM) and has worked with clients from ages 16-85, focusing on general health and personal goals with each individual. He enjoys meeting and developing relationships with new people and is excitied to work with you.