About RedZone

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RedZone Staff

What to Expect

Burn More Calories

With RedZone, you’re able to push your limits with your heart rate in mind. View your output on a screen, push yourself to reach the Red Zone, and enjoy the elevated calorie burn, even after the workout is over.


RedZone is a group fitness experience with the feel of a personal coach. Your instructor will encourage you to work hard during ever-changing classes, while understanding your current fitness level.


Because the workout is in a group setting, you get the added motivation of comaraderie and accountability. The energy of a group workout keeps you going to reach your Red Zone.

Meet the Team

Mike Lambdin

Mike Lambdin


In 2017, Mike decided that he wanted to bring another type of fitness center to the Decatur area. He wanted a group interval training class where each individual’s heart-rate was monitored. This would ensure that they could stay in their fat-burning zone as long as possible. He wanted the most energetic and motivated instructors possible, to make classes both fun and results-driven. He named it “RedZone” because you can actually watch your heart rate zones change colors during your workout.

Jenny Lambdin

Jenny Lambdin


Attend one of Jenny's classes and you will find high energy, fun, discipline, and a genuine love for you as a person for making a choice to be happy and healthy. Her 24 years of experience will show that she can teach to all fitness levels and help you reach your fitness goals. She makes sure everyone feels strong, included, and confident. The Lambdins have incorporated MLCrossfit and RedZone into a fitness FAMILY that you will love being a part of and will change your life in so many ways.

David Winholtz



David is passionate about fitness and committed to helping you reach your goals. He tries to make every class fun and energetic, while ensuring that you get a great workout too. David has about the most playful personality you'll ever come across, and rarely takes anything too seriously. When it comes to fitness though, he is 100% dedicated to not only helping you succeed, but doing so while having as much fun as possible! Take one of his classes and you'll see exactly what he's all about!

Haley King



Haley is a former kindergarten teacher turned stay-at-home mom, who has taken her skills from the classroom to the fitness studio. She is full of energy and passionate about the people she works with. Haley is a certified Tabata Bootcamp and spin instructor and is experienced in a wide variety of fitness styles including Cross-fit, HIIT training, running, and rowing. Haley loves connecting with people and can’t wait to welcome you to the RedZone community. Her classes are always different and challenging - she’ll definitely push you to your red zone!

Redzone Heartrate monitoring
Welcome to RedZone Fitness

What is RedZone?

RedZone Fitness is a one-hour group session that helps you burn more calories than ever before. By keeping a close eye on your heart rate using the MYZONE fitness belt, we’re able to maximize the amount of calories you burn, which keeps you motivated as you see results week after week.

After the class, you can open the MYZONE app to view minute-by-minute breakdowns of your workout, helping you to fully understand your workout habits and actually improve your effort. You also have access to leaderboards and status rankings to show off your progress and challenge your friends.

Our class is catered to those looking to push their limits, but if you have restrictions, this is a great class for you, too. We can watch your heart rate closely, and modify the workouts – everyone can burn more at RedZone. This is Decatur’s first group workout with the feel of a personal trainer.

Your First Workout is Free

Experience the RedZone effect for yourself with a complimentary group fitness session. Get a feel for our facility, the inclusive atmosphere, and the motivation of a group setting.

Start Today