athletic  performance  +  fitness  +  health

Would you like to jump higher, increase your athletic performance, or get back into shape?  Whatever your fitness or athletic goals are, I can help you accomplish them, whether they be improving your strength, speed, agility, vertical jump, building lean muscle, decrease body fat, or improving overall health.  

I am an NASM Certified Personal Training and have trained over 300 clients with consistent results.  I've personally accomplished a 40 inch vertical jump, deadlifted 435 lbs at a bodyweight of 168 lbs, 10% body fat, as well as many other athletic and fitness feats. ​


sign  up  today

personal  training

One World CrossFit

3415 Western Ave, Union City, CA 94587

frederick  nguyen


I have been working with Coach Donny since my freshman year of high school. I had never lifted weights before and my vertical was pretty low. But Coach Donny’s program has taught me how to use weights and incorporated them into a specifically custom-made workout. In three years, my standing jump has increased 7 inches, and my approach jump 9 inches, allowing me to almost dunk a basketball. I could not be any happier with the coaching Donny has given me, making me the athlete I am today. 
Frederic Nguyen.

1.  Email Coach Donny to check for availability at

2.  Once you have scheduled a training time,​complete the 2 waivers before the first session:

3.  Payment methods - cash, Venmo (donald-hui-1), or PayPal (

Due to high demand, I am no longer training one on one clients, only group training with 2 or more individuals.  

2 persons - $100/hour

3 persons - $120/hour

4 persons - $140/hour