Adaptive thermogenesis in humans (NIH)
Starvation response
Adipose tissue body fat
Adipose Tissue: Physiology to Metabolic Dysfunction
Does your body have a set point weight, and can you change it?
Maintaining Weight Loss
How to lose weight without exercise
Steps for Losing Weight (CDC)
When you lose weight, where does it go?
Optimal Diet Strategies for Weight Loss and Weight Loss Maintenance (NIH)
Metabolism and weight loss: How you burn calories (Mayo Clinic)
Estimated Calorie Needs Per Day by Age, Gender, and Physical Activity (Colorado State EDU)

What are the signs your body is in starvation mode? Claims:

• feeling cold
• Lethargy
• Constant hunger
• Constipation
• Depression
• Hair loss
• Missing periods
• Mood swings or irritability
• Sleep problems