The IMPACT program was the idea of Dr. John Spencer Ellis, founder of the National Exercise Sports Trainers Association and The Adventure Boot Camp Program. John and his team at NESTA did research on the best format for fat burning and muscle conditioning and came up with the formula for IMPACT. John invited Kelli Calabrese, Clinical Exercise Specialist and Master Trainer to co-create the program including the original 12 IMPACT Method workouts. Together John and Kelli have 45 years of experience in the fitness industry and have amassed 7 college degrees and a combined 35 fitness, nutrition and lifestyle certifications. Kelli and John have many media appearances to their credit including NBC, ABC & CBS. They have spoken internationally, have co-authored books and fitness programs and have dedicated their lives to the pursuit of well being and fitness. Kelli and John have poured all of their years working with clients from weekend warriors to athletes into the IMPACT program. They have read research, interviewed coaches and taken all of their successes with the Adventure Boot Camp program and wrapped it into the IMPACT Method for you to get the most excellent results.


Your IMPACT Fitness Singapore Coaches

Azrie is a highly qualified and experience Fitness Coach. His experiences include training various National Athletes from multiple sports.He has trained them as a strength and conditioning coach, from fencing, sailing, silat and softball. His vast experience also includes being the strength and conditioning coach for Nanyang Polytechnic Silat club from 2006-2008.Under his belt Nanyang Polytechnic Silat club attain overall champions for 2 consecutive years on 2006 and 2007 respectively. The clubs achievement was also featured in Suria’s (Singapore Malay channel) news.


Khairul is a dedicated personal trainer who specializes in fat-loss/toning for both men and women. He strongly believes that with his guidance, everyone can change his/her body and achieve his/her goals.            

Khairul was formerly a fitness trainer at Tanah Merah Country Club. He's formerly a freelance trainer with Fitness Health International and a part-time fitness trainer at SAFRA. Currently he serves as an IMPACT Fitness Coach for IMPACT Fitness Singapore.

Khairul is also currently one of Singapore's Health Promotion Board fitness trainers for its Season's 2 "Lose To Win®" Weight-Loss Programme.