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Classes at Foster Fitness (Up to 64% Off). Four Options Available.

West Revere

from $49
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Value Discount You Save
$100 51% $51
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In a Nutshell

Use the fitness classes to get in shape just in time for summer

The Fine Print

Promotional value expires 180 days after purchase. Amount paid never expires. Limit 1 per person, may buy 3 additional as gifts. Limit 3 per household. Not valid for clients active within the past 12 month(s). Appointment required, 24 hour advance notice required. Subject to availability. Merchant's standard cancellation policy applies (any fees not to exceed Groupon price). May redeem across visits. Valid only for option purchased. All goods or services must be used by the same person. Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services.

Choose from Four Options

  • $49 for five drop-in fitness classes ($100 value)
  • $59 for one month of fitness classes, four times a week ($119 value)
  • $139 for three months of fitness classes, four times a week ($357 value)
  • $199 for three months of fitness classes and online video training ($546 value)

Building Muscle: Cells on the Move

Read on to learn exactly how fitness classes leave you with more muscle or better tone.

Bulky upper-body muscles might have hindered early humans who had to chase their prey across the plains, but it could help those who often had to climb trees to adjust their satellite dishes. That’s why the body builds muscle according mostly to use: do enough curls, and the biceps expand. As anyone who has experienced post-workout soreness could intuit, those curls are actually a form of controlled damage, making thousands of miniscule tears to the muscle tissue that beckon autoimmune cells to show up alongside testosterone and other hormones. The white blood cells help switch on satellite cells, which are similar to stem cells. Before they're activated, satellite cells aren't doing much—instead, they lie dormant around muscle fibers until they're called into action to repair torn tissue.

This isn't the only kind of cellular transformation at work in growing muscles. Long muscle cells, which contain several nuclei, can also begin to change type after a workout. Certain kinds of muscle fibers are equipped to handle brief bursts of effort but will quickly become tired if asked to do more intense work. These are the first to disappear as someone starts an exercise routine, as they're converted into fibers with more endurance. This principle is so dramatic that a sports scientist can generally tell whether someone is a professional athlete or a professional mattress model by examining a minute sample of muscle tissue.

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    West Revere

    41 Marble St

    Revere, MA 02151

    +17814621718

    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
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