Fitness 19 is worth getting membership for Ligia! She's a great trainer that helped me to feel more…read moreconfident and get over the awkward hump of being at a gym! Ligia is knowledgeable and encouraging in actually teaching you the correct positions, postures, and techniques in using the equipment the gym has to offer. Thank you, Ligia for helping me jump start my health and fitness journey!

Been a customer for over 4 years. Entrance area on the…read moreoutside is riddled with cobwebs and bugs. Broken machines are not even labeled and a few have complained after using them and getting hurt. No action.

Quick service. Kahj got me signed up and set super quick…read more Facilities are clean and working

I would like to address what a reviewer recently said about this location because I think they left…read morean unfair review with lots of hyperbole. This gym does not cost $100 per month. As shown on their individual location page, the highest tier membership is $64.99. There are cheaper memberships depending on what membership you sign up for. It is not overly packed during the times that I go, usually around 6:30pm on weekdays and sometimes Sunday evenings. I generally count 8-10 people at most and have never had to wait for a machine or equipment. The only humidity you experience is in one of the bathrooms if someone previously took a shower. However, they leave the door open to promote airflow. As far as I am aware, there is airflow and I have not once felt uncomfortable there. Judging from a majority of reviews, many people like and in fact, love this gym. It will not anger you, unless you are quick to get angry over things. It sounds to me that the real cause of this low review was being charged an amount that they did not agree with, and possibly missing important details when signing up. This could have been resolved with a phone call, instead of a poor review. I would urge you, dear reader, to approach negative reviews like this with caution. Understand that the employees here care, it is not a crowded gym or humid in any manner, and Trent is there to help you out when needed. There is no pressure to join if you sign up for a free trial either.

UGF has truly transformed fitness for us, from energizing group classes to personalized 1:1…read moresessions with Yo. The coaching team (Mike, Yo, Alex, and Ashley) create a friendly, inspiring space that feels safe and motivating, pushing you to improve day by day through creative, varied workouts that build strength, mobility, and overall well-being. We're proud and amazed at how much stronger and healthier we've become. So thankful to be part of the UGF family - can't imagine what I'd do without that UGF rhythm in my routine.

I've primarily worked out with Yo for the last 6 months, from private trainings to classes…read more I was daunted about going to a "real" gym, with things like large tractor tires and metal weight sleds. I was wrong. She made all the workouts really digestible, yet tough enough that I feel it days later. She also helped me with nutrition and calorie intake. Thanks Yo!

I started going to this gym by taking personal classes with Anthony. After a year of training with…read morehim, I built my confidence (and stamina) enough to sign up for Leo's strength and conditioning course. Five years later, I married Colin--a fellow iron warehouse weightlifter. Now we have a baby, and I'm trying to find time to get back to the gym. Even though we live in Castro Valley, we try to find time to go to Iron Warehouse because it's worth it for the community. Leo does an amazing job of uplifting people that want to get into shape--and stay in shape! Truly, he creates a community in this little garage gym. It's the kind of place where people wave hello to each other as they arrive. You get out what you put in. Get ready to sweat. :)

This place is phenomenal! I'm doing personal training here with Michael Truong and this guy knows…read morewhat he's doing. I was able to have a consultation with him to discuss my current abilities/limitations and my goals, and he designed a personalized program for me to achieve success. His credentials are on full display through his extensive knowledge on proper form, mechanics, and motion of the body. He is not intimidating, but will motivate you to give 110%. Also, his payment plans are reasonable and won't burn a hole in your wallet. Michael pushes me to be the best I can be and I have no doubt that with his support I will be able to exceed my goals. I am a big fan of the open layout here. I don't feel cramped at all and feel completely comfortable/confident with the space they provide. They also have an abundance of equipment/tools for you to not only accomplish your own fitness goals, but to explore new ones as well. There are plenty of amenities and programs they offer for your to explore; however, I have yet to experience them so my review is limited in that regard. Ultimately, this is is a wonderful facility to repeatedly lift heavy things and put them back down, and I recommend you come check it out.

Arielah is a really great employee, you can tell she really cares about what she does. I always see…read moreher going around picking up little trash around the facility. Members love Arielah! She's the best. Really makes the gym a place you want to be at

I would like to express my dissatisfaction with my experience at 24 Hour Fitness. During my visits,…read moreI observed what appeared to be inconsistent treatment of certain members by management, which contributed to an environment that felt less welcoming and inclusive than expected. Additionally, the facility did not appear to be maintained to an acceptable standard. The gym was frequently dusty, and equipment, including dumbbells, was often left unattended throughout workout areas. This lack of organization created a cluttered appearance and raised potential safety concerns. Overall, cleanliness and facility upkeep did not seem to receive adequate attention.  I expect a fitness center to provide a clean, safe, and professional environment for all patrons. Unfortunately, the condition of the facility, combined with concerns regarding member treatment, fell short of those expectations. I encourage corporate management to review these concerns and take appropriate steps to improve both facility maintenance and the overall member experience.

Helpful personnel, clean environment, variety of classes for all age groups and levels of physical…read moreactivity

Poor management: Do you read your reviews?…read moreYou have several reviews over a period of years from various members complaining about a rude front desk staff person. Apparently, management chooses not to manage that issue. You need some fresh teachers and new classes in the exercise room. Same old boring stuff. Get some actual Mixxed Fit, U-Jam, or other classes with fresh choreography and music. It's like a senior center in there, which would be fine as far as the seniors, but even seniors like to do NEW choreography. At least pre-pandemic when Bob was teaching Zumba, he kept up with new routines. That's why his Monday night class was packed. There was actual choreography.

I've been going to Thunder Fitness for the past few months. It's a no-frills gym that has a great…read morecommunity of people who love fitness. I started out my weight training journey doing personal training with Hendy since I didn't know where to start. He's helped me build a great weekly routine. He's an absolute GOAT. Knows everything about exercise and how best to work each muscle. I'm glad I found this gym

Love the vibe here. Everyone is really friendly and helpful. It's a very welcoming community. It…read morehas lots of equipment and Ryan, the owner, is always updating the equipment to keep it new and fresh and fun. I honestly say, this gym is one of my favorite places to be. Not only do they have a gym, but they also have Marital arts classes.l so there is something for everyone!

Been going for CrossFit for almost 1.5 years and love it here. Coaches are knowledgeable,…read moresupportive and passionate about helping you improve. Community is humble, passionate and about the right size (not too big feeling crowded or not too small). I have gradually improved in all dimensions - strength, cardio, flexibility, technique and mindset/mentality. 5 stars! Highly recommend. You have various options (CrossFit, bootcamp, powerlifting, Olympic weightlifting etc) to chose from depending on interest and where you are at in your fitness journey.

I've been going to CrossFit One World for about 14 months now, and it's been a great experience. I…read morefirst joined the Boot Camp program, and coaches JP and Moe really made a difference for me. I had no background in CrossFit or weightlifting and felt completely new to it all, but they explained the basics clearly, kept things motivating, and often stepped in to correct form so we built the right foundation. That gave me confidence and made the classes something I looked forward to instead of dreaded. Over time, I enjoyed Boot Camp so much that I moved into CrossFit. I'm still a beginner in CrossFit and probably will be for a while but my weight loss has accelerated since making the switch, and I've started feeling stronger, healthier, and more positive overall. So far, I've had classes with seven different coaches plus Brad, the owner, and every one of them has been dedicated, approachable, and engaged. Each coach has their own style, which makes it fun you pick up something new in every session. Brad himself is humble and very committed to building the kind of community that makes people want to keep coming back. The best part of this gym is the great community of coaches n people. It's full of people who push themselves, encourage each other, and make the hard work enjoyable. If you're looking for a place that challenges you but also supports you, CrossFit One World is it. Joining here has been one of the best decisions for my health and well-being.