effects of pepper
Just like red pepper, black pepper has a thermogenic effect when ingested. The spice stimulates your metabolism and thus temporarily increases body heat. A higher basal metabolic rate means higher energy expenditure or more calories burned.
And, anecdotally at least, they act as an overall stimulant, producing a titillating, awakening effect and increasing the acuity of the senses. Peppers, especially the hot capsicum (chili) peppers, produce a burning sensation on the skin and mucous membranes, including the inside of the mouth. For the uninitiated, a relatively mild hot pepper can seem intolerably strong and truly hot peppers may even cause blistering of the lips and palate.