Five or Ten Boot Camp Classes at Tim's Complete Fitness (Up to 78% Off)

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Boot camps are an appropriate place to build muscle tone and an inappropriate place to test your hypothesis that everyone sweats different flavors. Work up a healthy sweat with this Groupon.

Choose From Two Options

  • $25 for five boot camp classes (a $70 value)
  • $35 for ten boot camp classes (a $120 value)

The Cardiovascular System: How Exercise Makes it Hum

Exercise can be a little tough when you start out. Take inspiration during your next workout by understanding the good it’s doing inside with Groupon’s whirlwind tour of the cardiovascular system.

The average person’s heart beats 100,000 times a day, pushing 10 pints of blood all the way to the tips of the toes and back through 60,000 miles of vessels. Along this route, that blood stops to do a great many errands. The heart pumps blood to the lungs to collect oxygen before sending it through the rest of the body via arteries, arterioles, and capillaries. Once the tissues have absorbed the oxygen and nutrients they need, they send the waste-filled blood back to the heart through the veins to be reoxygenated and start the process again.

Every time our heart beats, what we really feel is the opening and closing of valves that push the blood through the heart’s four chambers and out to the body. When we exercise or get scared by a shrub that looked like a huge dog for a second, our brains instruct the heart to beat harder to supply the body with what it needs to fight or run. As exercise enhances the muscles over time, it also improves the function of the entire cardiovascular system.

This happens in several ways. Although exercise makes the heart work harder in the short term, this ultimately causes the body to adapt, easing the heart’s everyday tasks. In response to muscles’ demand for more oxygen and compliments, the body actually sprouts new capillaries, while prompting existing capillaries to open wider. These increased channels help lower blood pressure, since blood now encounters less resistance on its way to the extremities. The heart also becomes better at oxygenating the tissues—red blood cells increase their numbers during intense exercise.

With its insistent knocking in our ribcage, you may think the heart’s role in all this would be hard to ignore. But the earliest anatomists didn’t hear its call so clearly. Galen and Hippocrates believed the liver produced blood and spread it through the body in a centrifugal manner; meanwhile, the veins contained air, which the lungs pushed to the tissues. They also assumed this was an open-ended system, with the blood and air gradually dissipating when it reached the ends of veins and arteries—a view that would hold for another 1,500 years.

Fat is also necessary, but in moderation: when the body is performing high-intensity, resistance-based exercise such as weightlifting, it bypasses fat in the body’s pantry and reaches for carbohydrates first. It’s also important to note that the body can only process so much protein at once, so multiple servings throughout the day are better than large amounts all at once.

A few other elements of food can aid muscle growth. Potassium-rich fruits and vegetables can counteract the incremental buildup of acids in the body that triggers loss of muscle tissue, especially as we age. Then there’s the simple concept that eating whatever allows you to work out longer and with greater intensity can indirectly allow for more muscle growth. Studies have indicated that fish oil, for one, can reduce the soreness and inflammation that might cut a gym session short or keep you from pushing the last five cars back to their parking spots. Seen in this light, even coffee with its energizing caffeine could be considered a muscle-building food, provided that you’re willing to do the work to use that energy wisely.

In a Nutshell

AFAA certified group exercise instructor Tim Bartlett helps classes tone bodies, burn calories, and discover their true fitness potential

The Fine Print

Expires 90 days after purchase. Limit 1 per person, may buy 1 additional as a gift. Valid only for option purchased. Limit 1 per visit. New clients only. Reservation required. Must sign waiver. Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services.

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