You Get What You Work For


When I was a kid, my parents taught me early on how to take responsibility seriously and work hard. I started drying dishes, vacuuming the floors and dusting real early on in my life. When I was 8 years old, my parents did a kitchen remodel (extension) and my sister and I brought in all the broken bricks by hand for the foundation, as well as all the bricks to build the extension.

As a teenager, I had vacation jobs from picking out fish in the factory, drying dishes in a restaurant, metal work to planting corn by hand. No matter if I knew how to do something or not, I was eager to learn and willing to make up for my lack of knowledge by hard work and motivation.

Up until this day, that lesson has stuck with me and as a business owner or athlete, if I have a goal I will not be outworked.

That doesn’t mean I’ve been successful with everything in my life, absolutely not. As a competitive biker I had a good run but didn’t have what it took (mentally) to turn pro. I have lost tournaments, failed on personal goals and have disappointed people. For these things I take full responsibility and am sorry. However I do not blame others for my shortcomings.

It is the exact way with training. If you want to reach a goal but don’t make a change, nothing will happen. If you have a 1,000 excuses all the time, nothing will happen. If you seem comfortable with how things are and don’t show motivation, nothing will happen. And if you feel sorry for yourself, it’ll be damn hard to reach that goal. This might seem blunt but it is the truth. If you want to be successful in reaching your goal and see a change, you have to look at yourself first. Keep yourself accountable for the changes you have or haven’t made, see what you can do better and don’t be satisfied with how you do things right now. If you are successful and see results in your training, there wouldn’t be a need to make changes because you are already doing a great job.

Now this doesn’t work for everyone, some individuals have other situations and should be more confident in themselves to reach a goal. However, for many this does apply. My job as a trainer is to know how to motivate someone, know who to make them reach their goal and make them feel good doing it. I highly believe in positive reinforcement and challenging a client while giving them a successful feeling when accomplishing their goals. It could be a small as an exercise or as big as a weight loss goal in 4 months from now. I don’t find it necessary to be overly strict with my clients as they are doing a great job and are intrinsically motivated. But there are also many others who need more accountability. If you want your physical goals to happen, you have to be mentally prepared. It is a huge factor in sports and training. Set little goals and go for them. Obviously things happen and your results might be off but don’t use too many excuses. If you reach a lot of little goals, you will eventually reach your final big goal.


By Sander Vanacker, owner, head instructor and personal trainer .

Define Defense in Boulder, CO
- Mixed Martial Arts
- Brazilian Jiu Jitsu
- Self Defense Classes & Workshops
- Personal Training
- TRX / Cross Training Classes
- Kettle Bell

1805 11th Street Suite B
Boulder, CO 80302

(720) 340 6254
Info@DefineDefense.com



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Our new website

Welcome to our new website!

We are pleased to tell you we have expanded our programs and class times.  A few changes we have made:

- We have revamped our website at
www.DefineDefense.com for your convenience
- We have added an adult Modern Martial Arts class (9 classes + 3 circuit training classes for you to join now!)
- We have added a women's self defense class (now 6 instead of 5) 
- The women's self defense program is $250 for 2 months of unlimited classes and
includes a pair of gloves (to ensure protection of the wrists).
- A new
Brazilian Jiu Jitsu program will be launched this Monday, this program offers 8 BJJ classes throughout the week and also offers 3 circuit training classes, free of charge.  All new clients joining the Brazilian Jiu Jitsu program will receive a $50 gift certificate to redeem with their membership.  This offer is valid until July 31st.
- Joining both Modern Martial Arts and Brazilian Jiu Jitsu will also be possible with our Platinum Program for only an additional $20 per month, please contact us for more information
- Define Defense has partnered up with Max Muscle Sports Nutrition in Boulder.  We are happy to inform our clients that they will enjoy a permanent
15% discount on all products and every new/existing client of the Modern Martial Arts/BJJ program will receive a $75 gift card to Max Muscle!
- You will also find all our videos and pictures on our website and we are adding more every week
- A new blogging website is on its way and don't forget to follow us on Facebook and Twitter!


Please note that the revised schedule goes into effect
Monday July 27th!

Define Defense is also having custom printed rash guards made to wear underneath your gi or for Brazilian Jiu Jitsu.  These help you stay cool and prevent mat burns.  We will be ordering these in black and silver, short and long sleeves.  However, if you are interested in purchasing rash guards, please let me know so we can order appropriately to ensure we have your size and color.  The rash guards will be available for only $40.  For more info, please feel free to contact us.

The Define Defense team hopes these changes will positively affect your training and we strive to continue to provide a fun and professional training setting.

Thank you for your support and we hope to see you again soon!


Sander Vanacker

Owner / Head Instructor
Define Defense Martial Arts & Private Training

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