What can DNA tests tell you?

Hello! I want to take a DNA test and I wonder what are the things i could learn about myself from the results?

There are lots of things you can learn from DNA tests results.
You can learn about personalised nutrition or fitness plans fit for you, based on your genetics.
This is a good way to learn about your athletic abilities, medicine or drug responses and general traits. It can be helpful in understanding genetic risk factors and hereditary conditions, but I think the most important thing it can do for you is to inform you about your ancestry.
A DNA test result can contain information about your health aspects such as diet, nutrition, obesity, diabetes, fitness, allergies, weight loss, detox analysis and skincare.