Living in Hillcrest has so many components that make it a terrific place to live, and one of the…read moreforemost among them is having Prime Fitness just around the corner from my house. Conveniently located on First Street and accessible 24 hours, the gym is clean and well-maintained. Occupying the entire ground floor of a building, it has a feeling of spaciousness about it. Doors that open to the small patio area, along with ceiling fans, enable good air circulation throughout the space. Fellow gym-goers are friendly and always willing to engage when you approach them about routines or exercises. No attitude at this place whatsoever. People are genuinely happy to share their successes and reflections on their own self-journeys to fitness, which makes the gym feel like not only a place the place where you can go to work out, but also a place where you can continually learn from other gym enthusiasts about ways to improve your own focus on physical improvement. A sense of a community among people with a common interest in health and fitness, and a willingness to share it, are two of of the most unique and notable characteristics of this gym. The owner, Keith Deidrich, pays meticulous attention to the gym's layout and functionality, resulting in a nice rotation of machines and weights throughout the space. It's exciting to come in to find a new machine, such as the very impressive cable crossover set up, complete with high bars for dead-hangs and pull-ups, or a one-of-a-kind lat pull-over machine that requires the force of your elbows, placed on pads and pushing down, to accomplish the exercise. It's like a squat machine for the upper body. In addition to the machines and freeweights, the gym has add-on weight blocks in gradations of two-and-a-half pounds that are custom-made to be inserted on top of the machine pulley racks to increase the resistance in smaller increments when the built-in 10- or 15-pound increases are too much of a step-up. Being able to use these blocks has enabled me to slowly increase the amount I'm lifting without making a jump up to a higher weight that is just too heavy. And there are plenty of cardio machines as well. In short, this neighborhood-centered gym with its relaxed vibe, excellent equipment, and friendly and respectful members makes working out a highlight of my daily schedule.

I've been coming to this gym for 7 years now and it is without a doubt the best gym in the region…read more This is the closest you'll ever get to having a personal gym in your home. It has everything you need, is in a fantastic location in hillcrest (if you live nearby, you can just walk over), has a sauna, 24 hr access, and the owner Keith is a great guy that truly cares for everyone's well-being. He's constantly trying to find ways to make upgrades and keeps the equipment in great shape. Being a member here means you're supporting a real local business built by someone who actually cares, not some huge corporation. I'll forever be grateful for Prime fitness as this was where my fitness transformation began and where 'going to gym' actually became a habit. It's welcoming, accessible, and can sometimes feel like you have the entire gym to yourself. I'd highly recommend this gym to anyone looking for a new place to work out, whether you're just getting started or you've been training for years. Thank you

The friendliness of the staff was impressive. They remembered me early on…read more On my fourth third visit I had taken my ring off while swimming. I left it on the 4-1/2 ft marker. When I came back the next day, it was put aside for me! What a relief! Justin Hartley, the manager, is a real sweetheart. He extends a warm welcome and is encouraging regarding getting what you want out of your workout!

Came on a Saturday evening to try and get a trial pass to see if it's a gym I'd like to work out…read moreat. Was turned away as their "financial advisors" weren't in. They tried to sell me a weekly pass to enter for like $40. Don't come here. Not worth it. Also, this parking lot and garage structure has a lot of homeless folk and transient people in cars. Sketchy vibe. They don't appear to have a security or parking attendant. Skip this gym! Check out somewhere else.

I can't say enough great things about Chris Keith Personal training. Since Thanksgiving 2025,…read moreChris has helped me lose 27 pounds, but more importantly, I've gained so much happiness and confidence in just those few short weeks. His support and motivation truly make a difference every single session. He not only wants to make you look and feel your best, but also cares about you as a person. Because of the positive impact he's had on me, my husband has now joined and started training with him as well. I recommend Chris to everyone I know and I'm so excited to see how much more strength, confidence, and progress I will gain over the next year and beyond! Thank you for everything, Chris!

I am still working out with Chris regularly and consistently. Chris truly is more than just a…read moretrainer, as a person that always asks a lot of questions regarding health, Chris also gives me guidance in nutrition, recovery health and other tips to make my fitness journey more effective. There is no gym or trainer in San Diego who cares about his clients as much as Chris, which is why I have been training with him for a quite a while now. Quality matters in a trainer just as much as in the client and how they show up in and out the gym, and Chris is that, a top quality trainer that just can't be beaten. Let alone, as a woman that gets intimidated by large crowded gyms, Chris' gym is like a safe place to me. Everyone who works out with Chris knows each other and it feels like a family-vibe whenever you go with just amazing people around. Chris is the best trainer in San Diego with the best gym in all of San Diego, and I could not recommend him more to anyone who is interested in starting their fitness journey! Thank you Chris!

This gym has all the equipment you would ever need if you are serious about strength and gains.read more

Thanks for the hospitality while I was in San Diego, Dave! I have visited Gyms all over the world…read morefor 40 years. Grinder is among the top power/strength gyms you can find! Dr. Joe

I worked out 5-6 times a day in my early 40's. I'm now in my late 50's with meds. You know,…read more"hereditary" stuff. I had no energy with metformin and Lipitor. After over a year I finally consulted Nike and Glenn. They gave me a regimen with supplements vs prescriptions. I got off one of my metformin dosage, my Lipitor, one potassium dosage and 1 diuretic . I have my energy back! 3/4 mile vs 800 steps!!! I was out of breath walking in place. I love these guys!!! Give them a try. Literally energy after 2 weeks! Thank you Nike!

I was referred to Glenn and Nike after I ran a marathon last year and had a lot of hip pain. They…read morehave both coached and guided me through physical therapy, nutrition, strength training and tailored running plans to continue my half-marathon and marathon goals. As someone who has had a wide range of fitness goals over the years, mostly trying to accomplish them on my own.....what a difference the last seven months has made working with these two! I recommend them to everyone I know and am grateful for their knowledge, support and true care!

I've been going to this gym for about a year now and I absolutely love it! It's sleek, super posh,…read moreand honestly feels like a fitness spa. Everyone somehow looks effortlessly pretty, insanely fit, and always in matching outfits. The music is always on point, which definitely helps power through tough workouts. My personal trainer Morgan is the best -- she keeps me committed, motivated, and laughing while somehow convincing me I can do one more rep. Her energy is contagious! I alsIf you're looking for great vibes and an amazing trainer, come over to Fit and ask for Morgan Devine-Phillips

Signed up!! No excuse since it's 5 minutes walking distance from home, so I better have abs soon!…read moreLOLOL! This gym is bougie in the best way. Located inside the Carte Hotel with two floors of state-of-the-art everything...plus reserved parking across the street (a miracle in Little Italy). The staff? Superstars. Mitchell, Eli, Morgan, Monica, Jasmine, Nat, Asia, Jen, and the FIT gang made me feel welcomed! It's got indoor/outdoor turf, a pool, a hot tub, and equipment that looks straight out of a sci-fi movie. It's high-tech yalls! Views of Downtown and Little Italy? Chef's kiss. They've got eucalyptus steam rooms, fresh towels, spacious lockers and showers, and even grab-and-go drinks and snacks. I basically never want to leave. Group classes are where it's at: yoga, HIIT, dance, and even reformer Pilates (yes, I feel fancy). Booking through the app is a breeze. The gym is always clean, never overcrowded, and yes people wipe down machines. Germaphobes, rejoice! Worth it? Because health is wealth and this place makes fitness feel like luxury. My home away from home. Cheers to hitting your fitness goals!

I've been doing 1:1 sessions with Lydia for a month now. I have really bad anxiety around strength…read moretraining and she has made me feel so comfortable and strong! I've grown so much in such a short amount of time and I can't wait to see how my journey goes. If you've been thinking about getting a trainer, I definitely recommend doing it with Lydia! She is so easy to connect with and her warmth just makes you feel comfortable doing things out of your comfort zone. I look forward to all of our sessions!

I've been working alongside Lydia the last few months and have seen the attention she puts into her…read moreclients and her business. She's organized, a great personality and incredibly smart. I HIGHLY suggest investing into her!!!

How cool it an 11-year update?! That's how long it'd been since my last visit, and although the…read morebox had changed hands a number of times, the experience was just as fantastic. I had a great Sunday workout with a tight-knit and welcoming community and coach, then stayed after speaking to Mike, the owner. He couldn't have been more kind. You can tell instantly that he's a born leader. The place is clean as a whistle; you quickly get the sense that there is a lot of pride at work. I'll look forward to going back. Obviously if you're in the area and looking for a new box, or are new to CrossFit, this will be the place that welcomes you. If you're looking for a drop in, you found it. Hopefully it won't be another decade before I get back!!

Loving it so far. Patient coaches, nice facility, and a friendly community. One of those places…read morewhere the only thing stopping you is yourself because this place provides the tools and resources to succeed.