Poor quality sleep can affect many areas of your life and health, and your doctor may be able to help you if you have difficulty sleeping or have insomnia or other sleep disorders. Learn more about the health consequences of sleep loss. If you're concerned about having trouble falling asleep or staying asleep, assess your risk for a sleep disorder. It's wonderful that you got a good night's sleep last night.
A callus (or callosity) is a toughened area of skin which has become relatively thick and hard in response to repeated friction, pressure, or other irritation. Rubbing that is too frequent or forceful will cause blisters rather than allow calluses to form. Since repeated contact is required, calluses are most often found on feet because of frequent walking. Calluses are generally not harmful, but may sometimes lead to other problems, such as skin ulceration or infection.
The formation of callus is a protective mechanism used by the skin to respond to external mechanical irritation. All skin is capable of forming callus. The most common locations for callus on the foot include the bottom of the foot, the side of the foot or even between the toes. Regardless of location, the cause of the callus is the result of external pressure that pushes against an underlying boney prominence.