There are plenty of people who overclock on the personal level. They are called Tweakers. They are so committed to overclocking that they don't bathe or eat. Some spend their life fortune on Human Overclocking and take to the streets to live in Human Overclocking communities that reside underneath bridges, along highways, and shelters for their brethren.
You can try overclocking by drinking energy drinks to see if it's right for you.
The Caveat to Human overclocking is the DMI Nervous System lanes that connect the main CPU to other parts such as the heart, liver, lungs, bladder, cache glands like the Pituitary. If proper stability isn't achieved then you may experience side effects that may include but are not limited to Hypertension, Anxiety, Tachycardia, Kidney stones, Tremors, etc.