Underground Training NJ

Underground Training NJ Underground Training is the foremost Personal Training and Open Indoor and Outdoor Gym in Bergen County. DM us for more details!

06/02/2026

What happens when a wrestler and a boxer team up to try something different and push themselves?? showed up in every possible way but not nearly as much as .james.fit__ and did, putting it out there in a setting neither of them are used to.

Moral of the story? Get out there, do something challenging, push yourself. No one has ever regretted it.

And a very special shoutout to who pushed, motivated, and, most importantly, recorded everything (probably did more steps than everyone else!)

05/27/2026

If you don't know yet, you will...

05/25/2026

We are always proud to partner with our friends as they raise money for their amazing school! This year's raffle winner of 3 Personal Training Sessions and 1 Month Membership is Isabella Bennaim!

Want another chance to win?? Come to our bootcamp this Wednesday evening at 8pm and enter to win!!

Want to donate? Go to the link in our stories!

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05/21/2026

A very special 30ish happy birthday to the most wonderful caring and special woman at Underground!

Allison, may this year only bring the most blessings! You deserve all of them.

Address

31 Prospect Terrace
Tenafly, NJ
07670

Opening Hours

Monday 6am - 8pm
Tuesday 6am - 8pm
Wednesday 6am - 8pm
Thursday 6am - 8pm
Friday 6am - 5pm
Saturday 9am - 12pm
Sunday 9am - 12pm

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