factors

• core body temp may change due to

  transfer of energy from your muscles during exercise and fevers caused by diseases

  
• core body temp may change due to

  the external temperature increasing or decreasing.

  
• the thermoregulatory centre in the brain

  hypothalamus

  
• the hypothalamus links the nervous system to the

  endocrine system
• the hypothalamus controls

  muscles,

  important aspects of parenting,

  attachment behaviors,

  thirst,

  sleep,

  circulation,

  Arcadian rhythm.