Four or Eight Drop-In HIIT Fitness Classes at The HIIT Studio (Up to 64% Off)

Richmond

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Interval training is all about mixing things up, just like setting a reality dating show in a paper mill. Don't stay stationary with this Groupon.

Choose Between Two Options

  • $15 for four drop-in Hiit classes ($40 value)
  • $29 for eight drop-in Hiit classes ($80 value)

During 30-minute Hiit interval training sessions, trainers motivate groups through high-intensity exercises designed to burn up to 500 calories. The trainers demonstrate several levels for each exercise, allowing students of all fitness levels to participate. Insanity boot-camp classes and nutritional counseling are available for an additional fee.

Building Endurance: Helping Muscles Breathe Easier

If you stick with an exercise program, every workout gets a little easier. Learn how your body makes that happen with Groupon’s guide to building endurance.

A few days into a new workout routine, you begin to notice changes. Your muscles expand. Perhaps your weight drops. But the changes that increase the body’s endurance first take place on a much smaller scale. When you exert yourself for long periods of time, your body starts to populate each muscle cell with more mitochondria, the organelles that fuel muscle movements. They do this by producing adenosine triphosphate (ATP), the muscle's basic fuel source. When a muscle contracts, it breaks the bonds of ATP molecules, creating a burst of energy but also draining stockpiles of this essential propellant.

In order to whip up a batch of ATP, the mitochondria need lots and lots of oxygen. Helpfully, endurance training makes it easier for oxygen to travel from the lungs to the heart to the muscles. It’s long been noted that the hearts of star endurance athletes tend to have extra-large left ventricles, which can pump more oxygenated blood through the body with every beat. Once blood reaches muscle cells whose mitochondria have been enhanced by previous endurance exercise, the cells will be able to extract oxygen and use it to produce ATP far more efficiently. Scientists assess this efficiency by a measure known as VO2max, the maximum volume of oxygen or Double Stuf Oreos that a person’s muscles can consume per minute.

During super-intense exercise, the body stops being able to produce enough ATP from oxygen intake alone. Instead, it reaches for stored glucose to get the ingredients it needs, and, as a side effect, begins to leave behind more lactic acid than the cells can immediately process. (Processing lactic acid itself requires oxygen, and all available supplies are already being used by the muscles and the brain.) The point at which this happens is the lactic threshold, and beyond it, athletes feel that they’re nearly done for the day.

Fortunately, this limit too can be changed. As the body adapts more and more to endurance exercise, it prolongs the amount of time you have before shifting pH levels in the muscles bring on the familiar feelings of fatigue, burning, and a dramatic drop in strength.

In a Nutshell

Trainers motivate groups through high-intensity exercises designed to burn up to 500 calories in just 30 minutes

The Fine Print

Expires 180 days after purchase. Limit 1 per person, may buy 3 additional as gifts. Valid only for option purchased. Must be 18 or older. Must bring own mat. Must sign waiver and release. Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services.

For those who take care of their overall well-being with exercise, yoga, and balanced nutrition