Why can't I sleep, think or breathe properly since my partner died? What grief does to your body

In our community sessions, the physical side of grief comes up constantly, and people are often frightened by it. Many assume something is seriously wrong, or that they're falling apart. Understanding the biology doesn't take the pain away, but it does take away some of the fear.

The pain of grief is therefore felt physically in our body and affects our thinking and behaviour; it is often experienced much in the same way as fear, and tips our bodily system into a heightened state of alert.

— Julia Samuel MBE, Grief Works, Pillars of Strength: Mind and body

Why does grief feel so like fear?

The writer C.S. Lewis, after his wife died, opened his journal with the line: "No one ever told me that grief felt so like fear." There's a good reason for that. Julia explains it in the programme:

When someone close to us dies, our bodies respond in the same way as when we are afraid. From an evolutionary perspective, this makes sense: if our prehistoric ancestors found the body of a family member, there was likely a threat nearby, perhaps a tiger lurking in the bushes.

— Julia Samuel MBE, Grief Works programme, Session 5: Soothing fear

The trouble is that this alarm state is built for minutes, not months. Research on attachment, described by neuroscientist Mary-Frances O'Connor, shows that separation from a bonded partner raises heart rate and stress hormones like cortisol. She also notes something bereaved partners recognise immediately: the stress feels particularly awful because you're facing it without the one person you would usually turn to.

Panic attacks after losing a partner

A panic attack can feel like a heart attack: pounding heart, tight chest, breathlessness, a sense of doom. After a death, they can come out of nowhere, in the supermarket, at 3am or the moment you walk into a room.

Exercise that raises the heart rate, followed by a calming meditation, can help to reduce any feelings of panic. Doing actively comforting things is also helpful.

— Julia Samuel MBE, Grief Works

Mary-Frances O'Connor describes the same thing from her own grief: what helped was matching her physical activity to the adrenaline her body was pumping out, and walking fast through her neighbourhood.

Why can't I sleep since my partner died?

Sleep is often one of the first things to go. O'Connor calls bereavement "a perfect storm" for sleep: adrenaline and cortisol keep you awake "as though [you] were drinking extra coffee throughout the day", and the everyday cues that normally tell your body it's time to sleep are disrupted. For partners, one of the strongest cues was getting into bed beside the person you love. Without them, bedtime itself becomes a reminder that they're not here.

What helps most, according to the sleep research O'Connor describes, is surprisingly simple: get up at the same time every day, even after a bad night. You can't force sleep, but you can anchor the body clock. The Grief Works programme gives the same advice:

Keep to a regular bedtime and getting-up time.

— Julia Samuel MBE, Grief Works programme, Session 20: A structure of good habits

If sleeping pills are offered, talk it through carefully with your GP; O'Connor notes evidence that they don't help grief and can make bereaved people's sleep worse over time. Ask about CBT for insomnia (CBT-I) as well. There's more in our practical guide to grief and sleep.

Grief brain fog: why can't I think straight, and how long does it last?

Losing words, walking into rooms and forgetting why, reading the same paragraph five times. This is one of the most common things people describe. Julia explains why:

We go numb because our brains are in a state of shock. In this state, we only focus on what's essential for our immediate survival, and filter out everything else. For example, we'll pay lots of attention to a loud noise, but struggle to focus on a conversation.

— Julia Samuel MBE, Grief Works programme, Session 7: Dealing with numbness

In a live session on "grief brain", Julia described just how ordinary and disorientating this can be, describing people who "go shopping and they've left their credit card behind, or they get in the car and they can't remember why they're there". Her advice in the moment:

give yourself a break and go, I recognize this is grief. This is my brain fog. Take a breath, slow down, allow myself to have this moment and be kind of kind to yourself.

— Julia Samuel MBE, speaking at the Grief Works Members' Meet-Up "Grief Brain"

There's no fixed timeline, but the programme notes that early shock-numbness typically lasts six to eight weeks, and can last longer after a sudden or traumatic death. The reassuring finding: in a large study O'Connor describes, bereaved people who were coping well performed no worse on thinking tests than people who weren't bereaved. The fog is your attention being pulled towards the loss. It is not permanent damage. Write things down, keep decisions small, and let other people hold the details for now.

No appetite since my partner died

When the body is in emergency mode, digestion isn't a priority.

Our brains will also ignore most of our emotions, including sadness. Our appetite and libido diminish, as neither of these are a priority in an emergency.

— Julia Samuel MBE, Grief Works programme, Session 7: Dealing with numbness

Cooking for one can also be a fresh loss every evening. Aim low and regular: small, plain things at set times. In Grief Works, Julia's advice for regulating the body includes "eating regularly, without great spikes of sugar, coffee or alcohol, which cause the body to peak, then crash". Alcohol can feel like it helps in the moment; it tends to make sleep and mood worse.

The ache in your chest

"Heartbroken" is not only a metaphor. Many people feel grief as a physical weight or tightness.

Grief sits in the body. People often talk about it as 'a knot' or as 'a block' in their throat or stomach. Sometimes it feels like their arms, legs or heads are very heavy.

— Julia Samuel MBE, Grief Works, Pillars of Strength: Focusing

Bereavement does place real strain on the heart, which is exactly why chest symptoms should never be dismissed. Get any chest pain checked, and then, once you know you're physically safe, give that ache your attention rather than bracing against it.

Why am I so exhausted, and what actually helps?

Grieving uses an enormous amount of energy. The counter-intuitive finding, repeated across research and in the programme, is that movement gives energy back:

During grief you're likely to feel drained and exhausted. So, it's no surprise if you're not jumping out of bed for your morning jog or popping into the gym on your way home. You want to preserve your energy, not spend it! But actually, exercise energises rather than drains you.

— Julia Samuel MBE, Grief Works programme, Session 15: Exercise

It doesn't need to be a gym session. A 10-minute walk outside, first thing, is enough to start.