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$18 for one month of gym memebership ($50 value)
- One month of gym membership ($50 value)
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- Three months of gym membership ($150 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.
Bulldog Gym, Inc.
Staff Size: 2–10 people
Average Duration of Services: 30–60 minutes
Handicap Accessible: Yes
Parking: Parking lot
Recommended Age Group: All Ages
Bulldog Gym, Inc.'s forest of free weights and jungle of gym equipment may look familiar, but it's the gym's invisible assets that make it exceptional. The on-site trainers—who specialize in working with teenage athletes—help members put together personalized workout, drawing on more than 30 years of experience in the forever-evolving fitness industry. Though they start by helping their clients determine what their output should be, they also extend their coaching to input. They construct customized diets designed to give each individual the right combination of nutrients to reach their personal goals, such as finally breaking through the food pyramid.