As a Professional Bodybuilder and member of the IFBB Pro League, Loyal Husband, Father, and Coach, I’ve dedicated my career to helping all individuals and competitive athletes reach their fitness goals!
If you have a competitive edge and would like to know if you have what it takes to compete in a bodybuilding show, or if you’re interested in getting fit and shedding a few pounds, contact me! I’d love to help you set some goals and design a plan to help you achieve them! For more information about my services, please visit my website at www.marksindayenifbbpro.com.

NW Fitness Magazine’s Best in the NW – Mark Sindayen of Giant Killer Krew aka GKKrew – Nutrition Coach, Posing Coach, Contest Prep Coach, Trainer & Competition Team Coach
NW Fitness Magazines “NW Best” Nomination form below……..
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Zeina Jensen – Best bikini training and posing coach!
Zeina Jensen – #GKKrew
Robert Clendenen – He has coached, trained and dieted my 19 year old daughter for her first Bikini Show this past March 31st, giving her a huge advantage in her classes. My daughter won her Bikini Division D Open Class and went on to challenge for the Open Overall Title, this was all possible only with Mark Sindayen as her coach, nutritionist and mentor.
Not only has he done great with my diet, and perfested my poseing. He has also explained things to me every step of the way. I can contact him at any time with questions or concerns, and late night chats for emotional support. Mark and the GK Krew have become family and i enjoy eveything i learn, and he makes prep FUN! Definitely going to be many more shows with Mark as my coach!
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Zazil Justine Saul – Honestly- this man & his family take every member of the GKKrew to heart. His clients arnt just seen as clients he treats us like family. He converts us into excellent athletes & always guides us to aim higher even though sometimes we may not be believing in ourselves even if for just a moment you feel like you can’t- he believes in you & that’s enough to light a fire inside you that motivates you to take things to the next level. He’s professional, he’s intelligent, he’s horribly bluntly honest in the best way, everything he teaches- is from years of experience & knowledge. He is committed to every person he comes around in every aspect of his life in & outside of Coaching. I couldn’t ask for a better coach to have my back & be as supportive as he is. Thank you Sensii ❤️
Peggi Stewart – Mark is an outstanding coach whom support me his clients with grace and dedication.
John wolfe – Awesome guy!!
JR Zante – He also is my trainer.
Talla Amini – Best and most helpful and humble and hard working !
Loraine Sindayen – If you’re a male bodybuilder willing to wear stage heels to teach your figure/bikini clients how to pose, that’s a sign of a coach willing to go above and beyond the call of duty!