One Ticket on June 13 or June 14 to National Fitness Productions - The Fit Expo (Up to 40% Off)

SAN JOSE McENERY CONVENTION CENTER

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Up to 40% Off
206 Ratings

What You'll Get


Choose Between Two Options

  • $15 for One General-admission Ticket on Saturday, June 13 ($25 value)
  • $15 for One General-admission Ticket on Sunday, June 14 ($25 value)

The Fit Expo takes place on June 13 from 10 a.m. to 6 p.m. and June 14 from 10 a.m. to 5 p.m. Special guests include bodybuilder Phil Heath, Jiu-Jitsu expert Rose Gracie, and fitness model Dolly Castro.

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.

About National Fitness Productions - The Fit Expo


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The Fine Print


Promotional value expires Jun 15, 2015. Amount paid never expires. Limit 1 per person, may buy 2 additional as gifts. Valid only for option purchased. Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services.

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