I am not an athletic person by any means, but as a recreational runner, I had a goal of completing a marathon. I have also never had a personal trainer before, but I wanted to make sure that I would stay injury-free as I increased my running volume. Jack worked with me for my whole marathon training cycle, and I felt very safe and confident in his expertise. He pushed me to develop my strength and endurance in our sessions, while being very mindful of any weaknesses or pain/overwork of my body as my training progressed. He was also very encouraging and patient, and always made sure that I would perform the workouts correctly. I kept seeing improvements in my strength and fitness, and ultimately, I did complete my marathon comfortably and injury-free, and I do credit so much of that to the program that Jack had developed for me.