If your skin is not too sensitive then you can use the shower to help stimulate the body's lymphatics and also help reset the body's stress response.

The lymphatic system is key to helping your body detoxify. It is part of the body's waste disposal system. There are superficial lymphatic vessels are situated under the skin and deeper vessels around the abdominal organs. 

In chronic pain conditions the lymphatic system can become more sluggish resulting in swelling of the hands and feet and also contributing to the brain fog that that often accompanies the pain.

Detoxifying the the body using hot and cold and manual lymphatic drainage helps to reduce the body's sense of overload.