He is a graduate of the School of Physical Education and Sport Science in Athens, specialized in "Exercise and Health". He has more than 15 years experience in the field of personal training and fitness. He has a sports management certification through the e-learning of the University of Athens. He was Assistant Director at Spectator Services at the ATHENS 2004 Olympic and Paralympic Games. He was the co-owner of the successful personal training studio "PERSONALive" for 7 consecutive years and now Nikos is the co-owner of the ATHLESIS gym.