9Round white map pin
9Round Fitness
449 Amherst Street Unit 7
Nashua, New Hampshire 03063

Schedule Your FREE Workout

9Round white map pin
9Round Fitness
449 Amherst Street Unit 7
Nashua, New Hampshire 03063




9Round works because it includes everything you need: a full-body workout that’s fast, effective and fun… personal trainers to help you… and expert nutritional guidance. And it’s all based on the latest exercise and nutritional science.

ABOUT 9ROUND Nashua, NH - Amherst St.

9Round Fitness Nashua NH Amherst Street is owned and operated by us, co-owners, husband and wife Michele and Joe Castellucci. Michele is the general manager and head trainer. Joe is the back office end of the business, but you will see him on the floor with Michele as well enjoying our members! Michele's experience in the fitness industry led us to find a way for people to fit in an effective workout in 30 minutes. One of the many perceived road blocks to enagaging in regular, intentional exercise is "I don't have time".  9Round adresses that belief along with many others! The full body workout 9Round delivers is effective due to the combination of aerobic, anaerobic, and resistance training. All too often a person's fitness routine is lacking one or more of these important components of total fitness which reults in frustration due to lack of results. More time than is necessary is spent trying to figure out how to get results. As a Certified Personal Trainer, Michele discovered most people enage in either cardiovascular exercise or resisitance exercise, not acheiving desired results, and in turn may look to a trainer to help them get out of the impossible cycle. 9Round specialized trainers are included in all of our memberships at a more affordable price than traditional, general practice personal trainers. Motivation and guidance is also a component frequently missing from a person's exericse session. At 9Round, there is ALWAYS a trainer present to insure proper form and execution of the exercises at each round and to motivate through the completion of the round. This is included in your membership investment! Have you ever been late for a fitness class so you didn't work out at all that day?! At 9Round, we only schedule your first workout! Members can get in their 9 rounds at any time during or operating hours! Flexibility is key!  We encourage you to call or contact us on the web to book your first workout! This is the best way to get an understanding for what 9Round will do for your health and fitness!

Strength: Stations 1-2

You'll use dumb bells, kettle bells, medicine balls, jump ropes and other equipment to build strength and stamina. Our trainers help you at every station.

Kickbox Fitness: Stations 3-8

The real fun begins as you punch and kick heavy bags to build power, double end bags to increase coordination and timing, and speed bags to develop shoulder conditioning and speed.

Abs & Core: Station 9

You’ll tighten and strengthen all the muscles in one of the most common trouble spots, your core, which improves your ability to perform any movement you do for work, exercise, or leisure.

9Round Delivers The Ultimate Body Transformation Program For All Fitness Levels

9Round is a specialized fitness center for people who want an unique, fun, and proven workout that guarantees results. 9Round offers a kickboxing themed fitness program that incorporates a functional, interval, cardiovascular, and circuit training regimens. The programs consist of a proprietary system of 9 challenging workout stations developed by a professional fighter.

What You Can Expect at 9Round Fitness:

  • Show up at your convenience; there are no class times
  • You’re immediately welcomed by a trainer
  • Trainer wraps your hands for support when punching
  • Use heart rate training to stay in your target fat burning zone
  • Trainer shows you how to do each exercise based on your fitness level
  • After station nine, your 30-minute full-body workout is over
  • Access 9Round Nutritional Guidance & one-on-one support
  • Enjoy a new workout every day (workouts change daily)
Our personal trainers take your workout to the next level, so you get

What You’ll Accomplish in 30 Minutes:

  • Burn massive amounts of calories during your workout
  • Burn body fat for hours after your workout is complete.
  • You release toxins as you sweat
  • Strengthen and tighten every muscle
  • Boost your stamina and endurance
  • Relieve stress
  • Strengthen your heart
  • Release feel-good endorphins
  • Increase energy, improve sleep, and much more

Here's what you get with your membership

  • No Class Times

    No Class Times

    Show up on your schedule. A new circuit starts every three minutes. Time wasted: ZERO!

  • Max Results in Just 30 Minutes

    Max Results in Just 30 Minutes

    Combines cardio and resistance training for a complete, full-body workout in 30 minutes.

  • Heart Rate Technology

    Heart Rate Technology

    Produces measurable results by helping you stay in your fat burning zone.
    * At participating locations.

  • Members Portal

    Members Portal

    Online meal planner, plus videos and more to help you track your progress and get results.

  • Workouts Change Daily

    Workouts Change Daily

    Every day is a new workout, so your body is always challenged, and you never get bored.

  • Personal Trainers Included

    Trainer Included

    Trainers are always there to guide, motivate and push you to get the most from every workout.

  • Get Fit, Never Hit

    Get Fit, Never Hit

    Punch and kick bags, not people. Quickly and easily get in shape with the basic moves of kickboxing.

  • Gloves and Wraps

    Gloves and Wraps

    For support and comfort. Trainers teach you how to wrap your hands in no time.

Custom Meal Planning

Your custom meal plan makes healthy eating simple. Swap out meals for endless variety.

9Round Nutrition Matrix

Shuffle for variety
Vary your meals in one click. Shuffle gives you new meals and snacks instantly.

Quick, easy access to all your favorite meals and snacks.

What to eat
Perfectly balanced meals and snacks with the calories and macro-nutrients your body needs.

Your custom needs
Our proprietary Meal Planner is designed to take the guess work out of eating right.

The Cold Hard Truth

Exercise alone is not enough.  We all know there are some days that we just can't make it to the gym, but we can always eat correctly.  With 9Round Nutrition, you will learn that it's possible to eat right anywhere you go… even when you’re eating out at restaurants. 9Round members have exclusive access to our online Member Portal where you will learn: 

  • The secrets to ​losing fat in those trouble spots
  • How to maintain weight loss and strengthen your entire body
  • How you can enjoy all-day energy and mental clarity
  • How to make real, sustainable changes to your lifestyle. No starvation, no diets, and no quick-fix disappointments

We believe that eating right shouldn't be so d@*# complicated!

Simply put, 9Round Nutrition is eating the right foods, at the right times, in the right amounts. Improving your body composition takes patience, persistence, and consuming the right fuel. That is how you perform like a champion.

Inside this program, you will finally learn: 

  • How many calories your body needs to function optimally (customized for your needs)
  • How to control your eating frequency to curb hunger and stabilize blood sugar (no more afternoon slumps)
  • The importance of rest, recovery, and water intake and how to make sure you’re getting enough of each
9Round Nutrition

See Your Results as You Work Out

In real time, the 9ROUND PULSE in-club display shows your effort level, heart rate, calories burned, and PULSE Points earned during your workout. Color-coded heart rate zones make it easy to see your effort level at a glance.

9Round results monitor

How It Works

  • You wear your 9ROUND PULSE belt during your workout.
  • As you work out, the device tracks how hard you’re working and displays your effort rating, your heart rate and calories burned on a monitor inside the 9Round club.
  • You can easily see if you’re in your optimal fat burning zone and adjust your effort up or down as needed.
  • View your results and progress any time from the app or your online account. Your results are also emailed to you after each workout.


Sample Workout Summary

Benefits of 9Round Pulse

  • Effectiveness


    Your heart rate is the ideal metric that determines how much effort it takes to burn fat and improve your cardio. Heart rate tracking helps you maximize the results you get from every 30-minute 9Round workout.

  • Adapts to Your Fitness Level

    Adapts to Your Fitness Level

    The more physically fit you are, the more effort it takes to get your heart rate up. But all you have to do is keep your heart rate in the optimal heart rate zone, and you’ll continue to get results.

  • Instant Gratification

    Instant Gratification

    Your real-time heart rate and color-coded heart rate zones continuously show you whether you’re getting the most from your workout. Your results summary is emailed to you after each workout.

  • Motivation


    Live heart rate tracking motivates you to put in the necessary effort because you have a specific target to shoot for.

  • Competition


    Compete against yourself or others with the live in-club display.

  • Points Make it Simple

    Points Make it Simple

    You accumulate pulse points for every minute you spend in each heart rate training zone. The harder you work, the more points you accumulate.

Local News and Events

Member Reviews

  • I came to 9round because I can never make a "regularly scheduled" class, but I need the motivation of working out with other people. I got a lot more than I bargained for! The 9round trainers are awesome and motivating, and I've realized how much I need these workouts and how much more in shape I *could* be. I love how every week there is a new CHOW, and every day there are new challenges. You can't get bored with this! If you love a challenge, this is for you :)

  • Love the convenience of being able walk in at any point and not have to wait for a class or be on a trainers schedule. Just jump right in and get a great 30 min workout. The heart rate monitoring is awesome as well. No guessing as to whether or not you are pushing yourself enough the system shows you and the staff. I burn 600 cal(140 meps) every visit.

  • Great gym, the staff is very helpful and enthusiastic, and they care about the people that come into the gym. The workouts are challenging but fun and you feel great afterwards!

  • I've never been a person who enjoyed working out, but I knew I needed to start doing something to better myself. I met Michele at a bridal expo and she explained the concept and signed me up for a free class. It kicked my butt and I realized how out of shape I really was, but I decided to stick it out. I've been a member for about 2 months and I can honestly say I look forward to going to the gym. All of the trainers welcome you by name as soon as you walk in. They boost your self esteem and help you prove to yourself that you can do it no matter where you're at with your fitness journey.

  • Joining 9Round was the best decision I made. I have tried other gyms but always got bored with building up my own routine or waiting for a particular class to start. 9Round offers a 30 minute workout that can be started anytime you arrive and varies every day. I find it challenging and rewarding.

  • I started at 9Round after getting tired of a boring work out at Planet Fitness. I am only on my 3rd month however I am glad I joined. The staff at my local gym are fun and very motivating.

9Round Certified Trainers

  • 9Round trainer
    Michele "Boss Lady" Castellucci
    Michele is the co-owner and manager of 9Round Nashua NH. She has previously been a group exercise instructor, certified personal trainer and a weight loss coach. Her passion for fitness and health is contagious and has contributed to helping others realize their health and fitness goals.
  • 9Round trainer
    Anthony "Superman" Castellucci
    If you are ready for an awesome workout, come on down to 9Round Nashua! I have nothing but passion and excitement for the 9Round fitness model, you may even catch me doing the workout with you! I have had a longtime passion for fitness and people, with many years of customer service experience, and well over 1000 miles on my road bicycle. If you were to find me on a day off, I'd be sitting on the couch with a craft beer in one hand and an Xbox controller in the other. See you soon!
  • 9Round trainer
    Heather "Wonderwoman" Barisano
    Heather enjoys fitness and people, a perfect combination for a 9Round trainer!
  • 9Round trainer
    Ali "Supergirl" Alden
    Hey everyone, I'm Ali! I can't wait to see you all here at 9Round Nashua! I have been into fitness my whole life and have a history in martial arts. I love throwing round kicks and I am always looking forward to my next workout here at 9Round. If you catch me outside the gym I might have some homemade cupcakes for you, I love baking cupcakes!
  • 9Round trainer
    Jonna "WILDTHING" Gath
    Jonna's story is coming soon!

9Round TV

Click the videos to learn more about 9Round and hear what members are saying:

  • The Science Behind the Workout
    The Philosophy
  • The Science Behind the Workout
    Rashad - 9Round Member - Kickboxing
  • The Science Behind the Workout
    Kristan - 9Round Member - Kickboxing
  • The Science Behind the Workout
    Kristi - 9Round Member - Kickboxing

Contact Information
9Round Fitness
449 Amherst Street Unit 7
Nashua, New Hampshire 03063
603-402-1630 or 978-758-9010
Hours Of Operation
Monday 6:00 am - 1:00 pm 3:30 pm - 8:00 pm
Tuesday 10:00 am - 1:00 pm 3:30 pm - 8:00 pm
Wednesday 6:00 am - 1:00 pm 3:30 pm - 8:00 pm
Thursday 10:00 am - 1:00 pm 3:30 pm - 8:00 pm
Friday 6:00 am - 1:00 pm 3:30 pm - 6:30 pm
Saturday 8:00 am - 12:00 pm


What 9Round Members are Saying

loses pounds
  • Dave R.
    Dave R. loses 70 pounds
    "After learning how much fun the 9Round program is, I've tried to work out 3-4 times a week since then. Now, instead of big, old and tired, I feel strong, balanced, and focused. I thank 9Round for the energy, environment, and guidance for my transformation."
    Dave R.
  • Danielle T. loses 40 pounds
    "In the past year, I have lost 40 lbs! I have crushed many of my goals, but still have goals to keep me motivated to get even healthier, stronger and more toned. We have gained another family, many skills, strength, more speed, a stress reliever, and a workout that simply works for our family!"
    Danielle T.
    Danielle T.
  • Lauren S.
    Lauren S. loses 30 pounds
    "I have been at 9Round for a couple of years now. It is the first time in my life that I actually love being active and get excited to see what new workout is waiting for me each time I go. The "new" me is confident, healthy, and motivated and I got here with help from the trainers at 9Round who make me feel like I am capable of anything."
    Lauren S.
  • Nenita W. loses 30 pounds
    "I have lost 30 lbs and lost 16% of my body fat. I started doing things I wasn't able to do before like running around after my two-year-old or going for actual runs by myself. The amazing trainers at 9Round never stopped pushing me to be a better person than I was the day before."
    Nenita W.
    Nenita W.

Get In Touch

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