I wanted a change of scenery and joined personal trainer, Nick, at his new studio. I appreciate the…read moreprivacy and comfort that the gym provides. My sessions are twice a week, and I'm happy with the workouts. The circuits that Nick prepares for me are tailored to my fitness and health goals. He's easy to work with!

From the owner: 24/7 Private Gym Access!…read more Month to Month membership gets you in the door whenever you want, train on your time! Avoid large crowds and waiting long for machines, with limited memberships available, you can get your workouts done on your schedule with the ability to setup your workout space to hit your goals! Weekly scheduled fitness workshops included as part of the membership to improve form, efficiency and gain different styles. Be one of the limited members and Join today!

I have loved being part of this amazing, family owned gym. Cornell has done a great job choosing…read moreinstructors who are knowledgeable, supportive, and awesome at what they do. Cathy and Marcella, who teach the small fitness classes, are amazing and the best cheerleaders you could ask for! I also love the sense of community and seeing the same friendly faces every week while becoming stronger and feeling better about myself. The instructors are always checking your form during the exercises and make sure you get the most out of your workout. They also tailor the exercises to your strength or any limitations you may have. Having an owner who is -la physical therapist is a huge plus for a gym and you can tell based on the instructors he chooses. For me personally I couldn't have asked for a better gym after years of not working out. I highly recommend Fit Studio Danville!

I have been coming here for over 2 years. Despite enjoying the low traffic, I am concerned about…read morethis gym's extremely poor infection control standards, especially given the $100 monthly fee. Surfaces appear clean, but accessories haven't been replaced in over two years and are often disgusting, with cockroaches sometimes found in the filthy mats. The owner's approach to sanitation is insufficient, providing only Renew moisturizing hand wash, which is not antibacterial, and Soluguard botanical spray. While Soluguard is EPA-registered to kill some household germs, it's a thyme oil-based product that doesn't provide the necessary level of infection protection against viruses like COVID or RSV in a gym setting. This inadequate hygiene, combined with the owner's indifference to member requests and dangerous habit of propping doors open, creates a serious safety concern.

Jason nailed it in his 5 star review, so I'm going to sound redundant, but it is important to get a…read morevariety of voices. Linda is laser sharp at analyzing your physical condition and goals, and crafting and implementing compatible exercise plans. She is incredibly professional and well educated, but also seems to have that rare touch - a natural as a professional trainer. She will get you to push much harder than you would on your own, perfect your form during every exercise, and develop core muscles that you never knew you had. (I see now that my prior experiences with "trainers" were absurdly simplistic and cookbook by comparison.) Very highly recommended.

Thank goodness for Linda! If you are looking for an amazing trainer who will effectively whip you…read moreinto shape, whether it be for you to lose fat and/or get strong, your search will end here. Hands down, Linda is THE BEST trainer I have ever worked with in all of Northern California! I've worked with other trainers before, and have even participated at Crossfit, but what makes her different from any other trainer is that 1) She genuinely cares about her clients and their fitness goals, and 2) She makes SURE that you are able to get the best workouts, with the right amount of intensity (and it varies with each person), SAFELY. She knows what she's doing as your trainer, even when you don't. Because of her, I not only reached my fitness goals, I went beyond them. Thank you Linda!!

Beautiful space, amazing staff and owners & an overall great atmosphere! Love it here!read more

Great place to workout and welcoming environment. I highly recommend to take your workouts to the…read morenext level

I really enjoyed my first Re:Form class with Tatiana! I booked via ClassPass, and my sister…read morerecommended this class to me after she went several times (she specifically liked Tatiana!). I had an amazing initial impression after being greeted by the friendly front desk and walking through the impeccably clean studio. The amenities were a nice touch with the water refill station, Nespresso machine, and hand towels in the bathroom instead of paper towels. There is also ample parking in the lot right in front of the entrance. My first experience with a reformer machine was for an advanced class elsewhere, so I've been scared of it ever since lol. I wasn't nervous at all in Tatiana's class; she explained each function clearly, and she's quite funny to boot. The class flowed well and I stretched places I didn't know I could stretch. The 50 minutes flew by, and any moves I wasn't familiar with I easily looked to my left or right. It sounds like they have harder/sweatier classes on other days, and this one was a great start!

I only came here once and I booked through class pass! I love that they have a neck supporting…read morepillow haha I feel very relaxed. They require every newcomer to take an introduction to Pilates class (I think even if you're seasoned), so you may find some of the exercises are simple and familiar. The space is very vibrant and comfortable. The actual building is a bit difficult to locate - they have signs around but it's located on the second floor and then entrance is towards the back behind a parking lot. All the staff are very kind, and they have a cute little Nespresso machine / coffee bar you can grab a drink from after.

We found Underground Fitness on Yelp. My wife and I were looking for a gym that's close to home and…read moreone that offers personal and group training. Although I've been going to gym since high school, my eating habits are not always ideal and I've always struggled with weight. At my April 2026 doctor's checkup I weighed the most I've ever been. Yikes! Some extreme lifestyle changes were needed, especially since I'm a dad juggling with a career. As a Yelper, I also need better health to enjoy good food , travel and enjoy life more! We signed up with Gil for 30, 1-hr private workouts. The results have so far been amazing - after 4 months, I lost about 20 pounds and feel better. Clothes feel looser and recent bloodwork showed great reduction in blood sugar. We recently re-signed for another 30 sessions based on excellent results to date. Here's why I recommend Underground Fitness if you are serious about weight loss: 1. Gil helps design a meal plan based on your target weight. Nothing too drastic - he reviews your daily meal and makes suggested changes and additions. In some cases you're adding food (hello egg whites and cottage cheese). 2. You get daily protein, carb, and fat targets that are easy to measure by uploading photos to any free AI agent - see Yelpers are naturally good at this! 3. Love the flexibility - weekly 1-hr sessions work best for me since I have access to my Corporate gym. Gil designs workouts each week via App that will guide you whether you work at home, travel, or have access to another gym. 4. The actual 1-hr workouts with Gil are brutal but you'll feel great afterwards. A mix of barbells, dumbbells, bands, cardio rowing/bikes, medicine balls, TRX, and pushing or pulling really heavy sleds. 5. With private training, you get a great coach and mentor in Gil, and can leverage his expertise to achieve your health goals. The cost is more expensive than a gym membership but if you want results, I believe the investment is well worth it.

I started working out with Gil about 6 months ago. He is a very knowledgeable and organized trainer…read morewho works hard on understanding his client's needs and then creates a long term plan to help them achieve their goals. Working out with Gil is equal amounts of pain and fun as while he is making you work hard, he keeps the conversation flowing. Despite the pain, the soreness, I actually look forward to our sessions as I can see the progress I am making and I have come to see him as a friend in addition to my personal trainer.

Out of all the local places to try on classpass SPENGA has been my favorite and most consistent…read moreworkout. The coaches are all really nice and helpful. They ensure that workouts are being done properly and safely. There is a parking lot in front that fills up pretty quickly but also a really big lot across the street.

Did a trial and for the price, it's just not worth it compared to other studios. There was no…read moresanitizer in the sanitizer machine, no face wash or hand lotion in the bathroom...and the bathroom was dirty. The hand sanitizer was not refilled for days. Is no one checking??? The instructors also do not come around to help people with form so you would never know if you're lifting properly or holding any yoga poses properly. Everyone just does their own thing because the instructor isn't checking if anyone is doing things right. Definitely not a place for beginners.

My fitness journey, began in 2000…read more While I was raising my three children, I belonged to fitness clubs and had personal trainers. I often became discouraged. My workouts became monotonous with stress and minimal results. In 2017, I developed a Chronic illness. I am physically unstable, and Right Sided deaf. I have NEVER experienced, the success that I am living today. Kristin Jones individual style of Coaching is motivational and fun. Kristin's,personal training sessions and workout videos, are tailored to my individual physical needs. What is a new and successful experience for me is Kristin's coaching style. What she does different, then any of my past programs, is: She conducts weekly online video check-in meetings. During that time, Kristin goes over my daily activities, offers suggestions, and what I find, most important, inspires me to be held accountable for my emotional and physical well being. I am experiencing for the First time in my life. a weight loss, (20 + lbs...), physical strength and an attitude lifestyle change. Even with my chronic illness, I never felt healthier in both mind and body. Kristin offers a balanced program that enthusiastically drives me to become, "the best version of myself, on a daily basis.- Lauren Baccetti-Eck

From the owner: Customized fitness, nutrition, and lifestyle coaching that helps clients live their best life…read morepossible.

After having two babies within three years, my body, especially my core, just wasn't the same. I…read morehad lost most of the baby weight through diet and cardio, but I knew I needed to rebuild strength. I'd done reformer Pilates back in college and loved it, so I started exploring studios nearby. After trying a few in the area, I found X2O Pilates, and I was instantly hooked. They use an Xformer, which is a bit different from traditional reformers. It's like a blend between classic Pilates and Lagree-style training, and it delivers serious results. Since starting a little over a year ago, my body has completely transformed. I have visible abs for the first time since my early twenties, and I'm more toned and defined overall than I've been in years. Eventually, I convinced a few friends to come with me; though they were definitely intimidated at first. But after just one class, they were hooked too! Every instructor at X2O is incredibly knowledgeable, supportive, and kind. They each bring their own unique style to class, but you truly can't go wrong with any of them. If you've been thinking about trying Pilates, this is your sign... go try X2O. You're going to love it!

I love X2O! I tried their original location with Pardis and really enjoyed the class. I'm happy…read moreEllen opened up this new location because it's much closer to where my family lives so whenever I visit I'll be taking a class. This is located right next to the SRV shopping area so super convenient location with a lot of parking. Great workout overall.

I first got a chance to connect with Nate while he was working in San Francisco; so happy to have…read morehim in the East Bay now! If you are looking to improve your fitness, health and life look no further-Nate is your guy. Nate has a fascinating personal background which always makes for a fun conversation. More importantly he has a really strong understanding of what it takes to be healthy and fit. He will customize a program and approach to fit an individuals needs and goals. His calm collective and friendly personality coupled with his deep knowledge base of fitness and health make him an ideal partner. My previous experience with trainers focused on pushing the limits of the body which for me resulted in injuries, fatigue and countless weeks in recovery which was very counterproductive. Nate has opened up my eyes to a different approach, one that focuses on the individual and how to works hard and smart to achieve your fitness goals. I don't write many Yelp review....but without reservation I recommend Nate as a valued partner to achieve your health and fitness goals!

Appreciated Nate's excellent style of training. I am a Senior who was looking for a program to…read morebuild more "strength and balance", Realized that as we age we loose a lot of it, Nate not only showed me a large variety of exercises, but explained how each one is important to accomplish my goals.He was careful to monitor my progress so I wouldn't hurt myself through the process. I would highly recommend him to anyone who wants a very knowledgeable instructor gives great care to his clients needs. Thanks Nate. I am so happy to have discovered your fitness program. Gloria