What did the microbiologist Nick Aicher discover about gym shower floors?

Aicher, a microbiologist, conducted an experiment that revealed alarming levels of bacterial growth on a gym shower floor, sparking concerns about the hygiene and health risks in gyms.

What types of bacteria are commonly found in gyms according to experts?

Experts say gyms can harbor dangerous bacteria like Staphylococcus aureus, which can trigger MRSA, and Salmonella, which can cause severe diarrhea and even fatal dehydration.

How can gym-goers protect themselves from the bacteria found in gyms?

To protect themselves, gym-goers are advised to wear flip-flops or shower shoes when using gym facilities, especially in warm, wet areas like showers and pools, where bacteria and germs thrive.

Home / Health / Microbiologist Exposes Shocking Bacterial Growth in Gym Showers

Microbiologist Exposes Shocking Bacterial Growth in Gym Showers

14 Nov, 2025

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Summary

Microbiologist tests gym shower floor, finds alarming bacterial growth
Warns that sweat and warm, wet conditions breed germs in gyms
Experts say gyms harbor bacteria like Staphylococcus aureus and Salmonella

Microbiologist Exposes Shocking Bacterial Growth in Gym Showers

On November 14, 2025, a microbiologist's disturbing findings about the bacterial growth in gym shower floors went viral, sparking concerns about hygiene and health risks for gym-goers.

Nick Aicher, a Chicago-based senior quality control analyst, recently conducted an experiment to test the bacteria levels on a gym shower floor. In a video that has garnered nearly 14,000 views, Aicher swabbed the floor and incubated the sample, only to be confronted by a thick presence of bacterial growth.

Aicher's findings align with warnings from experts about the germ-rich environments in gyms. Dr. Primrose Freestone, a senior lecturer in Clinical Microbiology at the University of Leicester, explains that "anywhere there's sweat, there are probably germs." The most common disease-causing bacteria found in gyms is Staphylococcus aureus, which can trigger MRSA, a serious and potentially life-threatening infection.