This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
Which of the following increases BMR ?newe 
Select and explain. 
A. Starvation, B. Obesity, C. Ingestion of food, D. Sleep
C: Ingestion of food
Answer: C: Ingestion of food 
Explanation: Ans. is 'c' i.e., Ingestion of foodFactors affecting BMR BMR (RMR) represents tissue metabolic activity. Hence BMR is affected by any factor which alters cellular metabolic activity and energy expenditure.i) Factors increasing BMR :- Early age (infancy and childhood), male sex, pregnancy, lactation, recent ingestion of food, (especially proteins), Cold or very hot (uncomfoable) environment, Fever, Hormones (thyroxine, catecholamines, growth hormone), muscular exercise (exeion), Smoking, Caffine, Stress and emotional hyperactivity, and person with tall thin built.ii) Factors decreasing BMR :- Advanced age (adult and old age), female sex, fasting, starvation, (up to 40% decrease in prolonged starvation), malnutrition, hot (comfoable) climate, obesity, sleep, and person with sho obese built.