What Your Body Is Holding

The phrase "broken heart" is not metaphor.

Research by Edward Smith at Columbia University showed that social rejection — including romantic rejection — activates the same brain regions as physical pain. The dorsal anterior cingulate and anterior insula, which process physical pain, respond to social loss. This is why heartbreak genuinely hurts in the body.

This lesson is about caring for the body that is carrying your grief.

The physiological reality of relationship loss:

Cortisol (the primary stress hormone) elevates significantly in the aftermath of significant relationship loss. Sustained cortisol elevation suppresses immune function, disrupts sleep, impairs appetite regulation, and affects cardiovascular function. Research on bereavement — including by Margaret Stroebe and others — shows elevated rates of illness and medical vulnerability in the months following significant losses, including relationship dissolution.

The pain in the chest that many people describe during heartbreak is real: the vagus nerve, which connects heart and gut to brain, is directly involved in the attachment system. Polyvagal theory (Stephen Porges) explains why social loss creates physiological dysregulation — the nervous system experiences it as a threat.

This means that physical self-care in grief is not optional — it is medicine.

Specifically:

Sleep: grief requires more sleep than normal — the brain is doing intensive processing. Protect sleep by reducing blue light in the evening, avoiding checking the ex's social media before bed (which re-activates the attachment system), and treating sleep as a healing priority.

Eating: grief suppresses appetite. Consistent eating — even when not hungry — maintains blood sugar and prevents the mood deterioration that comes from not eating. Simple, regular food. Not performative wellness. Just nourishment.

Movement: physical exercise is one of the most reliably effective interventions for grief-related low mood. It does not need to be vigorous. Walking, especially in natural environments, is supported by attention restoration theory (Kaplan and Kaplan) as restorative to a depleted attention system.

Touch: humans are touch-social animals. The ending of a physical relationship means the loss of regular physical affection. Research confirms that touch deprivation elevates cortisol and increases anxiety. Options: massage, physical contact with trusted friends, pets, or self-directed touch (holding your own face or hand in moments of distress) activates the same oxytocin response.

Your body is grieving alongside your heart. Give it what it needs. You cannot think your way out of heartbreak — but you can care your body through it.