5 or 10 Fitness Classes or 5 30- or 60-Minute Personal-Training Sessions at Fit 'n Lean X-ercise (Up to 52% Off)

Central Phoenix, Phoenix

from $34
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$70 51% $36
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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.

Choose from Four Options

  • $34 for 5 fitness classes ($70 value)
  • $60 for 10 fitness classes ($125 value)
  • $75 for 5 30-minute personal-training sessions ($150 value)
  • $125 for 5 60-minute personal-training sessions ($250 value)

Students may attend Aerial Yoga-Fitness, Barre Core, Boot Camp, Corebar and Zumba classes. Click to see class schedules.

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.

In a Nutshell

Certified instructors lead groups through body-sculpting Aerial Yoga, Barre Core, Boot Camp, Corebar and Zumba or help clients individually

The Fine Print

Expires 120 days after purchase. Limit 1 per person, may buy 1 additional as a gift. Valid only for option purchased. Limit 1 per visit. Appointment recommended, check schedule on website for classes. Merchant's standard cancellation policy applies (any fees not to exceed Groupon price). Must be 18 or older. Must sign waiver. Classes must be used by the same person. Valid for new clients only. 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

All Locations

  • Central Phoenix

    6522 N 16th St., Ste. 10

    Phoenix, Arizona 85016

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