That is something that cant be explained you will have to go to a doctor or a medical person or physician for that .
or try avoid using a cold shower take a hot shower
The answer is nuts, red meat and legumes.
Legumes are foods such as beans, lentils, chickpeas, peas and soybeans.
Red meats such a beef are rich in iron.
Nuts such as pistachios, almonds and cashews.
Answer:
There are several methods, and it varies out from person to person: exercise is one of them which releases good-feeling hormones (endorphins). There is also meditation, deep breathing exercises, any kind fo therapy that involves the 5 senses like musical therapy, aromatherapy (scented candles), imagery (happy stuff or relaxing stuff like imagining a waterfall) , or even biofeedback.