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    Recommended Reviews - FrostFit

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    Hank Frost
    Val U.

    I have been training with Hank the Tank since 2014. Not only is he passionate about what he does, but he knows the body really well and the sweet science it entails. Hank has a great warm up that will allow your body to go farther than you thought. He will tweak and tell you how to correct your posture and position to not only improve your set, but to also prevent injury, and maximize your body's capacity to go farther. I am extremely picky on my fitness instructors. I avoid teachers who have a poor warm, poor injury prevention, and who only do it for the show. Hank is extremely professional, well versed in fitness and the body, and passionate about his trade. I recommend him wholeheartedly and 'whole-bodily' without reservation.

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    2 years ago

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    3 years ago

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    6 years ago

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    7 years ago

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    4 years ago

    Hank is amazing. I am over 70 and he helps me keep boxing, and more importantly keep moving and happy, even during the pandemic.

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    12 years ago

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    11 years ago

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    8 years ago

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    12 years ago

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    10 years ago

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    Ask the Community - FrostFit

    Review Highlights - FrostFit

    I met Hank a few years back and asked him about some exercises I could do for my recovering injury at the time.

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    Rise Combat Sports

    Rise Combat Sports

    4.5
    (100 reviews)
    1.1 mi
    Family-owned & operated
    20 years in business

    This is one of the best MMA gyms in the city. I tried out a few places before settling at this gym…read more I ended up going multiple times a week all summer. The staff is very friendly and the instructors are top notch. I personally do mostly the boxing classes and Paris is a wonderful instructor. Once you get past the begging stages and are able to do some light sparring that is when he really shines as a coach. He is able to give genuine and very constructive feedback. Not that he doesn't put on great beginner classes or anything. I still attend those as well. Jacob is also a fantastic teacher, a lot more footwork in his classes. Combine the two and you're going to be very well rounded. (They also have several Muay Thai and BJJ classes) Overall the gym has all the staples, a few different types of heavy bags (about a dozen total), a double edge bag, and speed bag. Basic free weights and bench press. They even have the old school tire and sledgehammer. They have a ring of course for sparring as well. That coupled with some ex professional instructors and I'm not sure what else you're looking for. As for the community I've never had nor seen any negative altercations and from my experiences basically everyone is friendly and welcoming. I have no intentions of attending any other gyms and see myself here for quite sometime.

    I tried this place for a few months, and I would not recommend this gym…read more During class, it's hard to understand the instructors, especially through the noise. It's common for people to look around confused, unsure of how to perform the long combo shown. In maybe half the classes, though, additional instructors might occasionally come around to give tips. Compared to other gyms, the culture is notably less welcoming. I think the worst part though, is that some of the staff is oddly rude and sometimes aggressive. The only time I received a lasting injury in around 2 years of combat sports sparring was when a staff member here suddenly threw dangerous unpadded knees to my rib cage during a light spar. There are some parts of the gym that are nice. The head instructors, for example, are very kind and knowledgeable, and the place is usually pretty clean.

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    Rise Combat Sports
    Rise Combat Sports
    Rise Combat Sports

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    Punch King Fitness

    Punch King Fitness

    5.0
    (7 reviews)
    3.4 mi

    I started at Punch King Fitness in September 2025, and it has been the best gym experience I've…read moreever had. The workouts are intense, structured, and incredibly effective. You leave tired, but energized -- with that feeling that the hardest part of your day is already over, and you're ready to handle whatever comes next. I recently upgraded to three days a week, and honestly, I wish I had started sooner. My strength has improved, my cardiovascular fitness is noticeably better, and my back pain is gone. Most importantly, I can play with my three-year-old son without worrying about not being able to keep up with him. That alone has been huge. My advice: start with at least two days a week and stick with it long enough to see the gains. You will. Punch King is tough, but it works -- and you won't regret it.

    I've been coming here for years, and it's hands down one of the best workouts I've ever had. I even…read morecontinued training here during pregnancy and postpartum, and it helped me safely rebuild my strength. Every class is an hour, but they pack in cardio, strength training, and three rounds of boxing, so you leave feeling like you got an incredible full-body workout. King will definitely push you in the best way! What I love most is that the workouts are different every day. You're constantly working different muscle groups! Even ones you didn't know could be sore. It never gets boring, and you always leave feeling stronger.

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    Punch King Fitness
    Punch King Fitness
    Punch King Fitness

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    Rumble Boxing

    Rumble Boxing

    4.2
    (30 reviews)
    1.1 mi

    So sad to hear this location has closed! I took a class with Mark I. and had a blast. The vibes and…read moremusic were high and the whole class was super engaged and friendly. The facilities here were also top-notch: super clean, with plenty of lockers and shared amenities. Such a loss, since the Marina is such a great location for a studio!

    As an advanced level group fitness fanatic, I've checked out many different workouts and studios,…read moreso I consider myself experienced enough to soundly critique them. Rumble is similar to Barry's Bootcamp, but uses boxing bags instead of treadmills. There are also a few other key differences: WORKOUT Pros: -Alongside an inspiring instructor, Rumble also uses a projector to display the current moves and combos onto the wall, which is SUPER helpful. -The boxing gloves (available to rent) are cute. Cons: -Overall, the workout was not as intense as Barry's Bootcamp, so I didn't feel it was as nearly as good of a workout. (But you may consider this a good thing if you don't want an intense workout.) -Their full body workout hardly worked out legs at all aside from some squats. (The bags are for punching only, no kicks involved.) -At the bags, you only work out from one side of your body (like if you're right-handed, your left foot is constantly forward), which is incredibly unbalanced and bad for your alignment in the long run. So if you want to balance your muscles, it's completely up to you to keep count and remember when to switch sides. -Their wraps must have been too short because my knuckles still grated with each punch. Also, the uppercut punches still hurt my wrists despite the wraps and gloves. AMENITIES Pros: -Similar to Barry's, full amenities are offered. There is towel service, plastic bags for wet clothes, and water fountains and bottle refill stations. The ladies' locker room has hair ties, dry shampoo, hairdryers, and lotion. The showers are stocked with shampoo, conditioner, and body wash. Cons: The locker rooms could use more space around the sinks and just in general. Barry's locker rooms are bigger and have nicer toiletries. CONCLUSION All in all, I found more cons than pros here, personally. Given the price of Rumble vs Barry's Bootcamp is roughly the same, I'd rather spend my money at Barry's, which tends to be a little bit more upscale in amenities and a tougher workout. However, because Rumble is a lighter workout than Barry's, that also means it's less intimidating for those new to this style of circuit training. It's also fine if you like the boxing concept.

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    Bag-side Marina Boxing
    Bag-side Marina Boxing
    Glove wall Marina Boxing
    Glove wall Marina Boxing
    Bag-side Marina Boxing

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    Bag-side Marina Boxing
    World Muay Thai Team USA

    World Muay Thai Team USA

    4.1
    (74 reviews)
    3.1 mi

    World Muay Thai Team USA is the best Muay Thai gym in San Francisco. The gym is big and well…read moreequipped, with plenty of heavy bags, lots of mat space, and a full ring for sparring and drills. Classes are well run and open to all levels, from beginners to experienced fighters. The atmosphere is welcoming, focused, and respectful. I've trained with Kru Sam for over 20 years. He has proven to be one of the best Muay Thai trainers in the world. Over the last 25 years, he has developed multiple world champions and helped launch the careers of some of San Francisco's top Muay Thai and MMA fighters. His teaching is clear, technical, and patient. He gives the same attention to new students as he does to seasoned fighters. He also hosts fight events, giving his students real opportunities to compete. This gym has a strong and supportive community. Everyone trains hard and looks out for one another. If you want real Muay Thai with world-class coaching and a team that feels like family, World Muay Thai Team USA is the place to be.

    I've been going to this gym for about 4 months (-time off for work trips) and ended up going almost…read moreevery day. The coaches are skilled, personable, and really love to see when you're improving. The other students are welcoming and all putting in their best effort to better themselves all for various reasons, and if you're doing the same, you're gonna make some solid friendships here. Kru Sam is actually from Thailand and knows the traditions of the art and still goes back himself or sends students there regularly to train, which may be part of why he's trained so many champions. If you're looking to compete, a place to learn how to defend yourself, or even a place to get in a solid workout, give it a shot!

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    BJJ class
    BJJ class
    Can't to see Katie Miss Asian America 2017 at WTUSA
    Can't to see Katie Miss Asian America 2017 at WTUSA
    Coach Shannah Gozo

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    Coach Shannah Gozo
    Bay Breakers Boxing Gym

    Bay Breakers Boxing Gym

    5.0
    (7 reviews)
    0.4 mi

    I have been taking the intermediate class with Daniel and Andy. Both provide two different styles…read more Daniel focuses on the technical side in terms of what what possible move can come next in real-life boxing scenarios while Andy focuses as well on technical but mitt-style but with gloves and more fast paced combos and also work on bags. I have taken other instructors but those two are my fave! Highly recommend. Gym vibes are a plus!

    I was excited to see that another boxing gym has opened in SF and is available on ClassPass, which…read moremakes it easy to drop in and try out a class if you have a CP membership (if not, no worries, Bay Breakers regularly has its own trials and specials!). I have been to Bay Breakers a few times already and have had a great experience each time. Beginner class: I love that they offer free glove rentals for the beginner classes, which is perfect if you're just starting out and don't know yet if you want to commit to purchasing your own gloves/equipment. In Daniel's classes, he always starts with a jump rope warmup (a great workout on its own IMO, even though it's only for a few minutes) and walks the class through the numbered punches before working on some combos together. I have taken some other boxing classes around SF which tend to be more fitness-oriented (like Rumble?), and this class was a bit different since it was more focused on stance and technique, which I really appreciated to help build familiarity and confidence. Gym: My understanding is the gym is still getting up and running, so some of the areas are still unfinished (e.g., one of the restrooms). That being said, the main gym/workout areas are all good to go (as far as I can tell). There are cubbies at the back of the gym which feel safe since they're far away from the main door on Van Ness, curtained off changing areas, restrooms, showers, etc. Location: It's on Van Ness which is relatively easy to get to. There's a MUNI bus stop right outside, and a few other routes around the nearby intersections. With my current schedule, I'm unable to come to Bay Breakers as often as I'd prefer, but I always enjoy the experience here and look forward to coming more often in the future hopefully.

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    Bay Breakers Boxing Gym
    Bay Breakers Boxing Gym
    Bay Breakers Boxing Gym

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    FrostFit - healthtrainers - Updated June 2026

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