★ 5

Just a guy who cares deeply about health and fitness, sharing his knowledge and expertise with his clients one class at a time! Love the personalized session without the cost of personal training

Source: Google

★ 5

Jackd is the best place to take care of all your fitness needs. Whether you are coming off an injury or just looking for great fitness with a great person leading it

Source: Google

★ 5

Been working out with Jack for 5+ years. Excellent trainer, incredibly professional, and personalizes workouts to meet your exact needs. 100% recommend!

Source: Google

★ 5

I can’t recommend Jack’d enough. I have always felt intimidated by the gym and workout classes. After many years of chickening out, I finally called Jack 5 months ago. He was so positive and supportive from the minute we started talking. There is no judgment, just gentle encouragement all of the time and I actually look forward to going!
Jack and Michelle listen carefully and make adjustments based on how I’m feeling.

Lastly, the other people in the classes have all been genuinely wonderful. I have never consistently met so many nice people- of all ages and abilities. I think that’s really a testament to Jack for creating such a fantastic environment for training.

Source: Google

★ 5

Been with jack for 7+ years. He helped me reach my goals through highschool, D1, and professional baseball. Writes up each lift specific to your needs and goals. Creates a great environment to crush your workout!

Source: Google

★ 5

I've been training with Jack for several months, and I'm impressed by his personalized approach; he tailors every workout to match each individual's fitness level and specific goals. During sessions, he pays close attention to form, providing corrections and suggesting modifications when needed. In just a short time, I've made significant progress in areas where I struggled for years. Can't recommend Jack and his team hard enough.

Source: Google

★ 5

Jack is the best! As a former athlete himself, he truly understands movement and what it takes to build a healthy, pain-free lifestyle. I came to Jack with persistent lower back and hip pain that I hadn’t been able to resolve—even after months of yoga, stretching, and trying to fix it on my own. In just one session, Jack identified that the root issue was strength and mobility. Since then, my body has felt more mobile and pain-free than it had in months.

We often don’t realize how much chronic aches and pains affect our mood and daily life until they finally ease up. I can confidently say that working with Jack has improved my overall quality of life more than most investments ever could.

Jack’s approach to fitness is holistic and personalized for individuals at any age or fitness level. Whether you’re training through his app or working with him one-on-one, he tailors the plan to fit your goals, schedule, and budget. On top of that, he’s just an incredible person. I’m so grateful to have found him—can’t recommend Jack enough!

Source: Google

★ 5

Jack is a phenomenal trainer. I have worked with him for about four months and am now significantly stronger, better educated on injury prevention and nutrition, more confident exercising, and overall healthier than when I first started training. Jack helped me understand what the training was doing for my body, which motivated me to continue the workouts, and he made the workouts a joy. Jack is upbeat, encouraging, and genuinely enjoys helping people, whether with their fitness goals or otherwise. 10/10 recommend.

Source: Google

★ 5

Best fitness session in the bay!

Source: Google

★ 5

I've been training with Jack for just over a month now, and I honestly can't recommend him enough! From day one, he's been incredibly motivating, positive, and responsive — always checking in, adjusting workouts to my needs, and pushing me in the best way possible.

Not only have I noticed a change in my weight, but my stamina and overall strength have significantly improved. I feel stronger, more energized, and more confident thanks to his guidance and support. Jack brings such great energy to every session, and it's clear he truly cares about helping his clients reach their goals.

If you're looking for a personal trainer who is uplifting, knowledgeable, and fully committed to your progress, Jack is the one. Highly recommend!

Source: Google

★ 5

Working with Jack has made a world of a difference in my life. In just five months, my health, functional fitness, and overall confidence have improved dramatically — and I started from basically zero activity. Jack’s focus on pain-free movement, body neutrality, and truly functional strength has made everyday activities feel easier and more enjoyable. He’s always prepared, pushes just the right amount, and keeps workouts fun and interesting. Plus, with options to train at home, his gym, or over Zoom, he makes it easy to stay consistent. If you’re looking to invest in yourself and want to work with a genuinely kind, thoughtful, and knowledgeable coach, Jack is absolutely your guy. I can’t recommend him enough!

Source: Google

★ 5

My partner and I have been training with Jack once a week for a year now, and it’s been a fantastic experience. He’s always on time, super accommodating, and incredibly knowledgeable about the human body. Jack has no problem adjusting exercises to address things like ankle pain or to ramp up the intensity as our fitness improved. Thanks to his guidance, I can now lift heavier loads, walk longer distances, and stay active without getting easily winded. I recommend him to anyone looking for a trainer who knows his stuff and makes every session a great experience while helping you reach your personal goals.

Source: Google

★ 5

I've been training with Jack for almost half a year now, and I couldn't be happier. Jack is very professional and always lets me know the plan before each session. Before working with him, I used to feel discomfort in my left knee during squats, but now I can do bodyweight squats completely pain-free. I also love how he programs supersets thoughtfully and focuses on working at a solid intensity (7–8/10) instead of just chasing failure every time. Highly recommend!

Source: Google

★ 5

My twin sons started working with Jack prior to beginning high school. Six months later I started seeing Jack once a week. After years of trying to overcome knee pain when I run, Jack taught me how to strengthen my legs and now I don’t have any pain in my knee. I was about to give up on the idea of running again…and because of Jack I am back to running on a regular basis. My boys have learned a tremendous amount from Jack about how to exercise (“Engage your core!”), proper form, and nutrition. He takes an interest in my sons and he is a terrific role model. All of us are stronger, faster, and more agile/flexible because of our 3 years of training under Jack’s tutelage!

Source: Google

★ 5

Jack evaluates each person to determine what works best for their individual goals. He then customizes training to their need and ability. This personal touch makes all the difference! Great person and trainer!

Source: Google

★ 5

Each person in my family including myself, my wife, and son have benefited immensely over the last 5+ years from Jack's expertise and passion when it comes to fitness, health, strength, and skills development (Basketball).

We continue to learn from Jack each and every time we workout...in addition to gaining an appreciation and knowledge for good mechanics, habits, and growth we can't help but appreciate his inspiring attitude and commitment to living his best life.

If you're looking for a partner to work towards a healthier and happier lifestyle I can honestly say HE'S the BEST! Thank you Jack 🙏🏼

Source: Google

★ 5

Jack has been my trainer ever since I moved to San Jose two years ago . He has guided me through nutrition how important it is to fuel my body and also guided me on my workouts. Especially when my formation is wrong he corrects me and tells me where I go wrong. He also build a program around my needs and wants which was very beneficial as I am very independent and could workout on my own.I would highly recommend you contact Jack if you trying to loose weight, feel confident going to the gym and for strength training.

Source: Google

★ 5

If I could put 6 stars, I would. Two of my children (teens) have been working on strength, flexibility, basketball form (and even rehabbing) with Jack since 2020. Jack’s positive personality and knowledge about how bodies grow and work are excellent; he is a gem! I have recommended him to multiple families and will continue to do so. Jack is a great trainer, nutrition advocate, and even more importantly, a good human. Six stars! :)

Source: Google

★ 5

My son has been working with Jack for a couple of years. He is a very knowledgeable, positive, and enthusiastic trainer and a great role model for young athletes. Since working with Jack, my son has seen measurable gains in strength and conditioning.

I would highly recommend him and his training systems for anyone looking for a fitness coach.

Source: Google

★ 5

I honestly look forward to every workout with Jack! He brings such a positive attitude, truly cares about who he works with and is extremely knowledgeable about exercise and nutrition programs. I really appreciate how he tailors my workouts to my injuries or where I’m looking to improve. I highly recommend working with Jack!

Source: Google

★ 5

My training experience with Jack has been great! He created a training regimen that addresses my physical challenges (senior citizen with a bad knee) and is so patient when he reminds me of positioning for certain exercises. He mixes in new exercises and changes up my regimen to keep it fun and interesting. His positive energy and passion for sharing his fitness knowledge is contagious whether a serious athlete or a senior wanting to be able to pick up grandkids without wincing. I think his strength as a trainer is not only his fitness knowledge but his ability to relate to teens, young adults, parents and seniors!

Source: Google

★ 5

My husband and I have been working out with jack for the last three years and can’t recommend him enough! He is awesome in that he meets us where we are, including through pregnancy/postpartum and injuries, and does great to both adapt to where we are but also encourage us to push ourselves. I really appreciate jacks focus on functional movement, with a good balance of strength, cardio, and stretching. We can see measurable improvements in our posture and strength. Jack is also just fun to train with- he always brings a great energy (and playlist) to every workout!!

Source: Google

★ 5

I am a recent breast cancer survivor and wanted to regain strength, mobility and just an overall healthy mind and body. Jack understood all of this and structured my workouts specific to my abilities while also challenging me. Today, I feel stronger than I have in years. My soccer player daughter went to Jack this summer for conditioning workouts. He pushes her at every workout while also encouraging and cheering her on. Jack is one of the nicest and most genuine guys around so we were instantly comfortable with him. I would highly recommend him to anyone who wants a knowledgable and skilled trainer.

Source: Google

★ 5

Jack is an amazing trainer. He’s worked with both my teenage daughter and son for about a year cross-training for dance. They look forward to every workout clearly inspired by Jack’s expertise and warmth.

Source: Google