A temporary change in metabolic rate can make you feel
cold
The slight reduction in metabolic rate which accompanies any weight
loss may result in you feeling colder than normal, particularly in
your hands and feet.
This is a temporary side effect which usually improves over
time.
Your metabolic rate is the rate at which your body uses
kilocalories. Approximately 60-80% is used for essential
bodily functions including:
Between 60% and 80% of your caloric intake is used for
essential bodily functions.