15 Boot-Camp and Adventure Classes for One or Boot-Camp Classes for Two at Valley Forge Fitness (Up to 60% Off)

Merion Station

from $120
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Value Discount You Save
$300 60% $180
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Choose Between Two Options

  • $120 for 15 full-body boot-camp and adventure-training classes ($300 value)
  • $210 for 15 full-body boot-camp classes for a couple ($450 value)
  • See the class schedule.

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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    Merion Station

    5600 City Ave

    Philadelphia, Pennsylvania 19131

    610-924-4913

    Get Directions

In a Nutshell

Boot-camp classes push exercisers toward their fitness goals; adventure sessions take groups scrambling up walls and into yoga poses

The Fine Print

Expires 30 days after purchase. Limit 1 per person, may buy 1 additional as gift. Valid only for option purchased. Classes must be used 45 days from the start of the first class. 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
Choose your deal:
15 Classes of a Full Body Boot Camp & Adventure Training
$300 list price - 60% off - Save $180
0 bought
$120
15 Classes of a Full Body Boot Camp for a Couple
$450 list price - 53% off - Save $240
0 bought
$210