Hygiene and germ exposure

These notes combine advice from 7 reviewed passages across 5 workouts.

Overview

Coach’s claim

Coach claims that the body adapts to illnesses it encounters and becomes stronger. He also says people who regularly encounter different conditions become stronger. [2] [4]

Soap and cleanliness

Coach’s claim

Soap is important. After soap came into use, about 70 percent of diseases disappeared. [1]

Germ exposure and immunity

Coach’s claim

Long isolation can leave people vulnerable. Groups that lived without outside contact for generations fell seriously ill or died when they met unfamiliar viruses, because they had no immunity to them. [4]

Coach’s claim

Parents often stop children from getting dirty, but letting children play in dirt is a good thing. [3]

Gym hygiene

Coach’s claim

Poor hygiene in gyms is a real drawback. [5]

Earphone hygiene

Coach’s claim

Wearing earphones for an hour can increase the number of microbes in the ear by about 800 percent, and even clean-looking earphones can be quite problematic. [6]

Coach’s experience

In his own training, he listened with earphones for four to five hours at a time and never had ear pain, but he still does not consider long earphone use a good practice. [6]

Sources

1. 2024-02-07, 5186.3-5194.4s

Workout: workout:2024-02-07

Passage: passage:2024-02-07:001901-001903

2. 2024-02-07, 5197.5-5231.0s

Workout: workout:2024-02-07

Passage: passage:2024-02-07:001905-001911

3. 2024-02-07, 5235.3-5250.2s

Workout: workout:2024-02-07

Passage: passage:2024-02-07:001913-001916

4. 2024-04-08, 192.0-225.3s

Workout: workout:2024-04-08

Passage: passage:2024-04-08:000056-000063

5. 2025-03-05, 880.0-885.3s

Workout: workout:2025-03-05

Passage: passage:2025-03-05:000232-000233

6. 2025-12-20, 2573.8-2607.3s

Workout: workout:2025-12-20-slow-muscle-up-7

Passage: passage:2025-12-20-slow-muscle-up-7:000609-000620