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    Upland, CA

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    Blvck Box

    4.9 (159 reviews)
    Open 8:00 am - 12:00 pm, 4:00 PM - 8:00 PM

    Services - Blvck Box

    Personal training

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    Reviews With Photos

    Loida V.

    If you're looking for a great workout with a coach that's going to push you, then you have to check out Blvck Box! The group sessions are awesome and everyone gets their own punching bag for the entire workout. Get ready to be drenched in sweat after every workout, you'll be sore for a few days but will want to keep going back. Highly recommend it + the trainers and owners are awesome as well!

    Susie G.

    I juuuuust completed my 6 week challenge and I am proud to say that I PASSED!!!!! Ahhhhh!!!!! So the challenge was to either lose 20 pounds or 5% body fat by coming to class a minimum of 3 times a day and being on a "strict" meal plan. With a lot of burning sweat in my eye and tons of tumeric, I lost *drum roll* 12.4 pounds and 6.4% body fat!!! I am 31.5 years old and a mom to 7.5 year old twins and the excuse of "it's hard to lose weight after having kids" was no longer an excuse. I mean.. they're grown a** kids now! It was until this year when I realized, how the heck did I gain 30 pounds in a matter of 2 years and it totally hit me.. THIS IS WHAT IT MEANS TO BE 30!!!! so I'm like.. I gotta do something!!! I looked into CrossFit and requested a quote or to be called back and no one did. THEN I saw an Instagram post for a 6 week challenge and it was that scene in Legally Blonde when Elle Woods was like.. ME!!!!!!!!!! So I signed up (I dragged my friend and husband with me).. First day, I died. Skipped day two since, I died, but went the third day (my second class) and it surprisingly got easier (or I was half fasting my punches and kicks). The classes were instantly a love / hate relationship. Buuuuut it was until I tried the 6 am class. Mind you, I am noooootttt a morning person, but I was tired of the jammed pack 7 pm classes. Alvin teaches the morning classes and something about him knowing your name and his funny mustache smile made me think.. hmm.. this isn't THAT bad (THANK YOU ALVIN!!!!!!).. but honestly, if it wasn't for Alvin (and obviously the rest of the awesome OLFC crew.. shout out to ALEXIS), I wouldn't have fallen in love with the torturous 6 am classes!!!! And if you read all this.. good job! haha

    cynthia a.

    I started going to one love fit club in January. It was my first time doing Kickboxing so I was nervous, but I wanted to try something new for my workout regimen. Let me just say I am so glad I went to this gym versus else where. All the trainers are very knowledgeable, welcoming, helpful and simply fun to be around. They ensure to push you to your abilities and progress you from the punching bags to partner pads (which I really enjoy). Every class is different as there are different trainers, but you will have your butt kicked every time!!!!!

    Free pair of gloves (the blue one) from One Love Fit Club Walnut and my old gloves from back home.

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    9 years ago

    Love the coaches and the people. So far I have done one class and the next day I felt very sore. Facility is clean and welcoming!!

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    9 years ago

    The trainers off the bat are super nice. Great work out. Definitely recommend this place

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    8 years ago

    5 months later, and I'm still loving this place. Pounds are dropping and I'm gaining strength. You get out what you put in.

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    9 years ago

    I've only had a couple of sessions but I love it. They work you hard but make it fun!! I look forward to my next session

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    9 years ago

    Had a great first class! The trainers are knowledgeable and create a welcoming environment. Definitely worth a try!

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    Page 3 of 4

    Ask the Community - Blvck Box

    Do you offer varios classes on the weekday and weekends?

    Hi! Thank you for your interest and question! Currently we only offer classes: Mon-Friday @10am… 

    Hi do you have a Thai boxing class?

    Yes we do! Come check us out for free!

    View All 5 Questions

    Review Highlights - Blvck Box

    Sign-up for their five class deal and come experience why this place is true to their name, One Love Fit Club.

    Mentioned in 21 reviews

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    UCS - University of Combat Sports Carlson Gracie Claremont

    UCS - University of Combat Sports Carlson Gracie Claremont

    5.0(84 reviews)
    3.1 mi

    I initially moved to this area in October '22 and did a couple trial runs at a few of the…read moresurrounding schools before settling on the UCS academy in March '23. This academy is a rare gem for a few reasons, 1. There's an equal balance of Gi & Nogi BJJ. 2. The school also offers Muay Thai, Judo, Strength & Conditioning, and MMA classes. (Rare combo to find) 3. The academy has a great class schedule ranging from AM to PM classes. (Also hard to find) 4. The level of detailed coaching literally from any of the instructors is second to none. 5. Above all, the community is one of the most welcoming and family oriented which is a core value that trickles down from the owner - something I personally look for in a school. Whether you are starting your martial art journey or continuing it, this is a top notch place to do it at.

    Started my Muay Thai and Jiu Jitsu journey in Feb of 2025. I did not know what to expect at all and…read morewhere to begin. I typed mma gym into google map and UCS popped up. I emailed Jamar for a trial run and he set up an appointment for me. I will break this review down into a few sections. Head Instructor: Jamar adapts to each individual and motivates them according to their personality. He is one of the finest and most professional individuals I have ever had the pleasure to work with. He takes MMA very seriously and passionately. He cares about his students on and off the mat has made positive impacts on many people's lives, me included. He runs his business with integrity and honesty even if it means not making as much money as he could. He is upfront and honest with his students whether it's promotion or not being a good fit for the gym. He puts his students first and truly believes that his team is his family. Parking and facility: There are plenty of parking spaces. Facility is spacious with two restrooms. Got a few changing rooms to change in between classes from Muay Thai to Jiu Jitsu. Got a staging area for your gear and cameras all over the gym so you do not have to worry about your stuff going missing. Jamar offers refrigeration in case you have protein or drinks you want to keep chilled. Plenty of weights and workout equipment in case you are injured and cannot participate in sparring or rolling.I recently tweaked my ribs and while others rolled after lessons I just worked out at the side. Jamar cleans the gym after each use after the morning session as well as the night session. Environment/hours/schedule: UCS is one of the friendliest places I have ever been to. Unlike some of the other gyms out there, the students and instructors are not out to impress anyone. What I mean by that is no one is going to beat you up just to show you how cool they are. In fact Jamar is very big on being respectful and frowns upon being a mat bully. Hours of the gym are very accommodating. However accommodating Jamar is he does not tolerate being late, it's part of being respectful to other students! Muay Thai/Jiu Jitsu: As far as I know, this gym is one of the only gyms that still offers Muay Thai around the area. There is no "beginner's class" as everyone learns in a big group setting. This goes for both Muay Thai and Jiu Jitsu as well. Jamar has a keen eye for each individual's skill level and pairs you up with people that can teach and guide you. Each session starts with warm up following up with a lesson plan for the week and ends with light contact sparring. Safety is very important at UCS as it should be at any MMA gym. Jamar has a no nonsense policy when it comes to the hygiene and safety of his students. With that being said you will get punched/kicked in the face and body, but it's something you will be able to tolerate. I mean after all you are coming to learn a combat sport. This is a Carlson Gracie Jiu Jitsu and they teach both Gi and No Gi Jiu Jitsu. One of the reasons why I love this gym is because it is a very balanced gym. Jamar encourages his students to learn both and be well versed in both. At first I was super lost as to what I'm supposed to do but from the short months I have been here I feel like I have improved significantly. Everyone here is very patient and welcoming and I never felt pressured to practice any moves I'm not comfortable with. One of the earliest lessons I have learned from Jamar is tapping early and not pushing myself because I do not know what I am doing yet. As far as promotions, go there isn't a test so you do not have to worry about paying extra to advance. Overall, I cannot recommend this place enough. I have made many valuable friendships that I know will last a lifetime. you will just have to come and check it out. Reach out to Jamar about trial class and begin your journey, you will not regret it, OSS!!!

    Photos
    UCS - University of Combat Sports Carlson Gracie Claremont
    UCS - University of Combat Sports Carlson Gracie Claremont
    UCS - University of Combat Sports Carlson Gracie Claremont

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    Supreme Striking Martial Arts

    Supreme Striking Martial Arts

    5.0(15 reviews)
    5.7 mi

    My two boys and I attend Supreme Striking, and we've been going since about April of this year. It…read morehas been a great way for us to stay active, bond as a family, and it's honestly a place where I'm happy to be. The coaches take their time to explain the reasoning behind each movement and the importance of proper form, which has really helped us learn and improve. The environment created by the coaches, staff, and students is welcoming and supportive. They truly embody the word TEAM. I feel like I belong to a great community while also bettering myself physically and strengthening the mind-body connection. I am becoming stronger, more disciplined, and more confident with every class. I'm so glad we found Supreme Striking, and I'm excited to continue this journey with my boys.

    I can't say enough good things about this place! I've been coming for about two months. I'm taking…read moreboxing and trying to build my stamina and strength. Coach, Rob and coach Kris, are great at getting me motivated to work hard and push past BS so that I can get the results I want. The people are friendly and they have a lot of community building activities if your into it... This is the first time in my life I've been consistent with exercise! Highly recommend if you want to work hard and learn new boxing skills. It can feel intimidating at first, but everybody's friendly if I could give it 100 stars I would.

    Photos
    Supreme Striking Martial Arts
    Supreme Striking Martial Arts
    Supreme Striking Martial Arts

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    Fitness Underground - Another view of the gym featuring a spacious dumbbell area.

    Fitness Underground

    4.9(55 reviews)
    1.3 mi
    Family-owned & operated
    Established in 2017

    I was in the area and I was looking for a gym that was a little less crowded and this exceeded my…read moreexpectations. I saw the reviews for this place and decided to call and get a day pass. It's true that people are more respectful at this gym because when I walked in everything was clean and everyone was wiping things down and re-racking their weights. It makes for such a better lifting experience when everyone respects the equipment and facility. You sign up on an app and you beep in via a bluetooth system which was convenient for my early morning lift. I even got to meet the owner Ian, and he was cool and helped me get a day pass fast which was great! I intend to come back here! 10/10.

    I have been going to Fitness Underground for a year. The gym is designed with a focus on power…read morelifting and overall strength training. I was especially interested in lifting heavy weights but I wanted an experienced person with me to avoid injuries. I was in need of a personal trainer to help me achieve my fitness goals. I had a great experience training with Denisse! She was incredibly personable, encouraging, and made every session enjoyable. She paid close attention to my form, provided helpful corrections, and explained everything clearly, which gave me the confidence to lift heavier weights safely. I left each workout feeling stronger and more capable. I highly recommend her to anyone looking for a knowledgeable, supportive, and motivating personal trainer.

    Photos
    Fitness Underground - Main Gym Area. Dumbbells, cables, plate loaded and selectorized machines, squat racks, turf area

    Main Gym Area. Dumbbells, cables, plate loaded and selectorized machines, squat racks, turf area

    Fitness Underground
    Fitness Underground - Excellent equipment, check out this Leg Machines

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    Excellent equipment, check out this Leg Machines

    Blvck Box - gyms - Updated September 2026

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