One or Two Months of Boot Camp or Three Personal-Training Sessions at 5th Quarter Sports Zone (Up to 67% Off)

South Loop

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In a Nutshell

Trainers help clients build muscle, burn calories, and reach their fitness goals in one-on-one or group boot-camp settings

The Fine Print

Expires 90 days after purchase. Limit 1 per person, may buy 1 additional as gift. Valid only for option purchased. Limit 1 per visit. Must activate by expiration date on your Groupon| Reservation required. Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services.

Choose from Three Options

  • $59 for two months of boot-camp classes ($140 value)
  • $29 for one month of boot-camp classes ($88 value)
  • $70 for three personal-training sessions ($180 value)

Boot-camp classes meet every Saturday at 9 a.m.

Personal-training sessions and boot camp at 5th Quarter Sports Zone will leave you with more muscle or better tone. Read on to learn exactly how that happens.

Building Muscle: Cells on the Move

Bulky upper-body muscles might have hindered early humans who had to chase their prey across plains, but they 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, 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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    South Loop

    2138 S Indiana

    Chicago, Illinois 60616

    630-379-6750

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