Study: Gyms Teeming with Bad Bacteria

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The folks over at, a company that does fitness equipment reviews, have a message: Gyms need to clean up their act. 

The company gathered samples from 27 different pieces of equipment at three different gyms to get an idea of how many germs a gym-goer may encounter when they touch a treadmill, exercise bike, or free weight. The survey of equipment measured bacteria bycolony-forming units (CFU) – the number of viable bacteria cells. The results showed that treadmills, exercise bikes and weights were hosting more than 1 million CFUs per square inch apiece. According to FitRated, all three types of equipment yielded "gram-positive cocci (a common cause of skin infections and other illnesses); gram-negative rods (which can prompt many types of infections and sometimes resist antibiotics), and gram-positive rods (which can – but don’t often – cause ailments

The graphics below speak volumes about the importance of keeping gym equipment and surfaces clean. In the meantime, have a look at what happens when you slack on your cleaning regimen. 


Examining Germs Gym2


From AB: Properly Cleaning and Disinfecting Fitness Equipment


Germs Compared1

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