Biography

Derrick Mathy came to movement through eleven years of assisting orthopedic surgeries. That experience gave him a close understanding of the human body and a lasting respect for precision. Small details matter. So does the relationship between them. Today, that same attentiveness shapes his teaching: understand the mechanics, notice where you compensate, and develop a way of moving that feels both capable and your own.

His practice brings functional strength, mobility, and coordination into one continuous conversation. Derrick’s teaching style is calm, grounded, and a technique-obsessed approach that builds structure- flow requires you to stay present as the structure changes. A swing becomes a clean. A change of direction asks for balance. The transition deserves as much attention as the movement itself. Strength matters, but so does the ability to rotate, move one side at a time, and find control without carrying more tension than you need.

As a StrongFirst-certified SFG1 instructor, Derrick teaches Kettlebell Flow, Kettlebell Yin: Mobility and Flow, and Mind Body 360 across Chicago studios. More than 200 in-person classes have shaped a precise teaching approach without being rigid, challenging without asking you to perform. You do not need to arrive strong or coordinated- you need a begginer’s mindset that is committed to starting where you are.

Each practice is heavily influenced by the rhythm of Chicago house music where your breath is your anchor through the flow. There is space to work, to ask questions, and to practice beside people who are doing the same. A mantra in Derrick’s classes is to “stay with yourself,” and that means some days call for more effort. Others call for a slower pace and closer attention. Neither is a lesser practice. The invitation is to meet the day honestly, stay curious through discomfort, and become a little steadier in how you respond.

The aim extends beyond the class. Develop strength you can use, mobility you can return to, and coordination that serves you when life is less predictable than a sequence. Make time for recovery as well as effort. Build a relationship with movement that can continue to evolve, rather than one you have to start over every few months. Out of the head. Into the body. A practice that supports the athlete in you—and a way to move well, for life.

The Method