1.can be slowed down with dieting 
2. the amount of fat the body has compared to muscle 
3. can occur over a 5 to 10 year period resting
  4. the number of calories used during daily activities 
5. the process by which food is changed into energy and used by the body

Metabolic rate
creeping obesity
resting metabolic rate
body composition
metabolism

Please hurry. These are matching terms.