ONYX Health Club 24/7's Holy H.I.I.T class is a full-body cardio and toning workout using various weights and techniques to gain strength through the whole body. This high-intensity interval workout will allow you to push yourself to the max for 60 seconds before you move to the next workout technique. Every workout is different, keeping your body guessing!

With ONYX's H.I.I.T (high-intensity interval training) class you'll be going through quick, intense bursts of motion which will be followed by brief recovery periods. Your heart will be racing and lungs yearning for air the entire time. The class also never stays the same, it's always changed up, to keep things interesting. This class will have you burning extreme fat!

The Benefits of ONYX's Holy H.I.I.T Group Class

  • Builds Endurance
  • Extreme Calorie & Fat Burner
  • Boosts Metabolism
  • Lose Fat & Not Muscle
  • Improves cardiovascular health
  • Challenging
Get a Free Trial
View Class Schedules
Exciting News!
ONYX is sponsoring this year's 40th Annual
Cleveland Turkey Trot!
Registration for the event on Thu November 25, 2021 is now available!
The ONYX Health Club Cleveland Turkey Trot Logo

more than a gym

We Focus On

Fitness - Accountability - Nutrition

and our 24/7 gyms reflect this in our offerings

Shirt Icon
Wear Comfortable Clothes!

Whatever clothes you want to get sweaty is fine with us, seriously.

What Jug Icon
Drink Out Of Any Size Water Container!

We don't care what size container you drink out of, just stay hydrated!

Freedom of Expression Icon
Freedom of Expression!

Finally did it? Then celebrate! Going hard? Then let it out! There's no alerts here.

Personal Training Icon
Personal Training

Each session is completely customized and tailored to your goals, your schedule, and your body.

Group Classes Icon
Group Classes

Get gains and make friends in any of our numerous Group Classes.

State of the Art Technology Icon
State-of-the-Art Technology

We've got some pretty high tech toys that bring your workout & data collection to the next level.