Cardio Training for Aerobic Fitness

Feel the burn. Savor the sweat. Watch the pounds and inches diminish. Cardio Training at Catalyst will move you to better cardiovascular health. A conditioning benefit that will reward by improving performance in any other workouts you may do—and by enhancing experiences in your daily life routines.

Our Fitness Clubs offer an abundance of cardio equipment for individual training, and motivational group classes with varying degrees of intensity challenge. Our Personal Trainers also offer customized one-on-one training sessions designed around your age, current physical and medical condition, and fitness goals.

At Catalyst, we strive to help you become your very best by offering whatever type of cardio fitness program and assistance is right for you.

Cardio Fitness Equipment

Our dedication to helping you become and stay your very best translates into providing you with the very best. Our ever-expanding line of Cardio Equipment offers something for everyone and includes:

  • TreadMills
  • Elliptical Trainers
  • Stair Climbers
  • Stationary Bikes
  • Recumbent Bikes
  • Spinning Cycles
  • Indoor Running Track (Middlebury Only)

Cardio Fitness Classes

It’s about motivation. About having fun. About results. At Catalyst, we don’t encourage you to work out—but rather “work-in” through a team-spirited, friendly and respectful approach. With high-energy Catalyst classes, the hard work doesn’t seem so hard, and the desired results come much faster. Our always evolving, multi-level Cardio Fitness classes are unlimited for all members and include:

Blast-N-ToneVarying classes focus on lower body, upper body abs, and core.

Booty Boot-Camp: High-energy fun to string waistlines and sculpt curves

Cardio-KickboxingAddictive, fast Paced, medium intensity excitement

Body-sculpting Dance: High-energy music and choreography that’s super fun and effective!

Cardio-Dance:  Lose pounds and inches through shake & shimmy calorie burn

Catalyst Cycle: Intense spinning bicycle simulations for cardiovascular fitness at its finest

Redefine: Boost heart rate, strength, metabolism through weighted and self-body-weight exercises

Insanity: Total-body conditioning program based on the principles of MAX Interval Training

Pure Tone: Appropriate for all levels fitness challenge combining weight training and self-body exercises

Turbo-Kick: High-intensity, kick-boxing-styled training that kicks it up a notch

ZUMBA!: Latin-infused cardio dance workout certain to have you sweating your way to improved health

  • t1

    I began working with Kostas about six months before my wedding...The time that I spent in the gym with Kostas was the most fun I have had working out.

    — Diana Mirante


  • t2

    “Investing in Kostas made a significant…the integrity by which he runs his business, his persistence and expertise, and his balanced, compassionate, flexible approach…If I were to describe the experience in two words, it would be “Life Changing.”

    —Rich Morabito


  • t3

    “I began training with Janet at Catalyst…today I have progressed so that my blood pressure regularly tests at 110/70; my total cholesterol is 146 and my HDL is below 100.”

    — David Rapp


  • t4

    “Training with Stephanie at Catalyst has been the single best “health decision” I have ever made. My newfound muscle tone and weight loss are the visible counterpart to the internal strength and positivity I feel…”

    — Melissa Beth


  • t5

    “As a result of my training with Andrew, I am both physically and emotionally stronger. I am grateful for his guidance and highly recommend his training to anyone…”

    — Marianne Savarese


  • t6

    “Throughout this journey Kostas has been there to encourage me and push me beyond what I thought were my limits. He believed in me when I didn't believe in myself…”

    — Christine Peterson


  • t7

    “Cate took the time to get to know my lifestyle habits and fitness goals…by the time I finished training with her, I put on eight pounds of lean muscle…I would never have put on this many pounds of muscle without her coaching and guidance.”

    —Justin Slater


  • 100 Main Street North
    Southbury, CT 06488


    Mon. - Thurs. 5:00 AM - 10:00 PM
    Fri. 5:00 AM - 9:00 PM
    Sat. & Sun. 7:00 AM - 6:00 PM



  • 930 Straits Turnpike
    Middlebury, CT 06762


    Mon. - Thurs. 5:00 AM - 10:00 PM
    Fri. 5:00 AM - 9:00 PM
    Sat. & Sun. 7:00 AM - 6:00 PM