Four or Six Personal-Training Sessions plus One Month of Gym Access at Prime Fit Elite (Up to 83% Off)

Los Angeles

from $79
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Value Discount You Save
$396 80% $317
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Choose Between Two Options

  • $79 for four personal-training sessions with one month of gym access ($396 value)
  • $99 for six personal-training sessions with one month of gym access ($594 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.

Prime Fit Elite

At Prime Fit Elite, personal trainers and sports-performance coaches help clients get in the best shape of their lives, whether they're training for a specific sport or simply personal reasons. Certified trainers boast expertise in subjects ranging from High Interval Training (HIT) and kickboxing to functional endurance and corrective exercise.

In a Nutshell

Personal-training sessions provide one-on-one attention with customized fitness programs; sessions are supplemented by regular gym access

The Fine Print

Expires 120 days after purchase. Limit 1 per person, may buy 2 additional as gifts. Limit 1 per visit. Valid only for option purchased. Appointment required. Merchant's standard cancellation policy applies (any fees not to exceed Groupon price). Not valid for clients active within the past 12 months. Must be 14 or older. Must sign waiver. Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services.

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All Locations

  • Los Angeles

    11567 Santa Monica Boulevard

    Los Angeles, California 90025

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