$99 for the Drop A Pant/Dress Size Challenge at Rock-Fit Plus ($700 Value)


Sorry, this deal is
No Longer Available
See similar deals
Give as a Gift
Be the First to Buy!
Limited quantity available

In a Nutshell

Three-week program helps participants lose weight with weekly meal plans, group personal training, and plenty of emotional support

The Fine Print

Promotional value expires Mar 28, 2014. Amount paid never expires. Limit 1 per person, may buy 1 additional as gift. Limit 1 per visit. Merchant's standard cancellation policy applies (any fees not to exceed Groupon price). Reservation required. Health assessments must be scheduled by March 28th. Valid only for new clients and clients who have not visited in the past 6 months. Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services.

Rock-Fit Plus - Tribeca: $99 for the Drop A Pant/Dress Size Challenge at Rock-Fit Plus ($700 Value)

The Deal

  • $99 for the drop a pant size challenge (up to a $700 value)

Metabolism: Balancing the Body’s Ledger

Running burns calories, but adding muscle can help you burn calories even while sitting still. Learn why with Groupon’s guide to the metabolism.

To make sense of metabolism, it’s easiest to think of the body as a machine with countless functions and very specific fuel requirements. When we eat, enzymes in our digestive system break down food into its component ingredients: proteins devolve into amino acids, fats into fatty acids, and carbohydrates into sugars such as glucose. These then seep into the blood stream and spread throughout the body, so that thousands of metabolic reactions happen at the same time. Some of the energy from these acids and sugars gets used for specific bodily maintenance functions, such as pumping the heart or yelling to scare away a mean-looking squirrel. Whatever isn’t needed right away will be stored as fat for later use.

To avoid gaining extra fat deposits, we must use all the calories that we ingest. The speed at which energy is burned while at rest is called the Basal Metabolic Rate, or BMR, and it’s affected by a person’s age, sex, and proportion of muscle to fat. The older a person is, the lower their BMR typically is; men generally have a higher BMR than women; and the body burns more calories to maintain muscle than fat. (After all, it would be a rather poor design if the body had to use a great deal of energy just to maintain its energy reserves.) Our BMR adjusts according to our lifestyle, slowing down when food is scarce and speeding up when we have to eat our way out of the wreckage of a popcorn-factory explosion. This is why eating five smaller meals throughout the day can help people lose weight, whereas starvation diets often result in little to no weight loss.

How the body uses its fuel was a perplexing mystery for generations of thinkers. In the 1600s, a man by the name of Santorio Santorio took it upon himself to study body weight. For 30 years he weighed everything that went into his body and everything that came out, often eating, working, and sleeping on a scale. What he found was that his total visible excreta was less than the amount of food he ingested, but the difference couldn’t be accounted for by his weight gain. This led him to come up with the theory of insensible perspiration—the unpalatable idea that we constantly expel waste through our skin.

  1. 1


    107 Chambers Street

    New York, NY 10007

    Get Directions

Warm weather essentials that prep bods for the sun with tanning, toning, and beach-ready apparel
For those who take care of their overall well-being with exercise, yoga, and balanced nutrition
15% Bonus Savings
Get an extra 15% off local restaurants, spas, salons, and more to use within 48 hours of your Goods order! See details
By purchasing this deal you'll unlock points which can be spent on discounts and rewards. Every 5,000 points can be redeemed for $5 Off your next purchase.
Save 50% to 90% in Washington DC Oops!, an error has occurred, please try again

By subscribing, I agree to the Terms of Use and Privacy Statement.

Thanks for subscribing to Washington DC deals with