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$39 for One Month of Twice-Weekly Personal Training at Sergeant's Boot Camp ($240 Value)

Silver Spring

93% of 15 customers recommend

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$240 84% $201
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In a Nutshell

Personal-training sessions combine strength training and cardio conditioning to tone muscles and burn calories

The Fine Print

Promotional value expires 60 days after purchase. Amount paid never expires. Limit 1 per person. Reservation required. Must sign waiver. Expires 30 days from activation. Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services.

Sergeant's Boot Camp - Silver Spring: $39 for One Month of Twice-Weekly Personal Training at Sergeant's Boot Camp ($240 Value)

Many exercises are rooted in everyday activities, such as walking up the stairs or punching a heavy sand-filled bag that's in your way. Be prepared with this Groupon.

The Deal

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.

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93% of 15 customers recommend

The best deal out there!
Wilson C. · December 16, 2014
Excellent John is a ! Fantastic trainer - really cares and you get a real workout.
Susan W. · November 18, 2014
If you are serious about losing weight, the coach will get you where you want to be. Do not sign up if you re not serious, because he is not playing! Show up to put in work, and follow his instructions on diet and additional exercise, and i guarantee you will see amazing results! It's not easy, but it's worth it!
Odav J. · October 15, 2014
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    Silver Spring

    8060 13th St.

    Silver Spring, MD 20910

    +12404326197

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