Question

What is tummy time and why does it matter?

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Answer

Tummy time is supervised time a baby spends on their front while awake. It matters because babies now spend far more time on their backs than they used to, and that change had an unintended consequence.

The background. The Back to Sleep campaign, launched in the early 1990s, advised placing babies on their backs to sleep. It was enormously successful, and sudden infant death rates fell dramatically — it is one of the clearest public health successes in child health.

It also meant babies spent much more time supine, and two effects followed: increased positional plagiocephaly (flattening of the skull) and some delay in motor milestones. Tummy time was recommended as the counterbalance — back to sleep, front to play.

What it develops:

Neck, shoulder, back and core strength, needed for head control, rolling, sitting, crawling and eventually walking.

Head shape. Varying pressure on the skull prevents flattening, which in infancy is soft and genuinely responsive to positioning.

Visual and spatial development, from a different perspective and from tracking objects while prone.

Bilateral coordination and the weight-shifting that precedes crawling.

How to do it:

Start from birth, even a minute or two at a time. Guidance commonly suggests building toward an hour a day in total by around three months, accumulated in short sessions.

On the chest counts. Lying the baby prone on a reclined parent's chest is tummy time, and is often better tolerated at first.

Get down to their level. Babies tolerate it far longer with a face to look at.

Do it when alert and not just after a feed, which reduces spitting up and crying.

Use a firm flat surface on the floor, not a soft one.

Never leave a baby prone unsupervised or asleep — sleep remains on the back.

If a baby hates it, build up gradually and try short frequent sessions. Persistent strong aversion, a consistent head turn to one side, or noticeable flattening is worth raising with a health visitor or GP — torticollis is treatable and common.

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