The speaker argues that **sales is not a good job for a side hustle**. Although it might seem easy from an outsider's perspective, sales is actually a very stressful job. Here's why:

* **Dealing with people** is a major source of stress. Sales involves constant communication with various types of customers, including difficult ones and those with complaints.

* **Company politics** can be another source of stress. Particularly if you don't get along with your boss.

* **Sales targets** or quotas can create stress, as you feel bad when you don't meet them.

* The combination of these stresses can make it hard to switch gears and focus on a side business after work. The speaker recalls being so exhausted after work they had no energy to do anything else.

* Even with a lack of overtime, the speaker was too tired to pursue any side hustles.

Instead, the speaker suggests a job that is **more physically oriented** and allows a clear separation between work and private life. They also suggest **reducing work hours** by working part-time, such as 2 or 3 days a week, to lower stress and allow more energy for a side hustle.