Otto Duijs Otto Duijs Personal Training Neerbosscheweg 6534 BK Nijmegen NL Toon e-mailadres T: +31652094244 W: / Advanced Mylogenics Practioner, Kettlebell Master Instructor, Personal Hormonal Profiler, Power Sled Trainer, TOP Level A Certified Trainer, TOP Level B Certified Trainer, TOP Level C Certified Trainer