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Kelly Sansom

Kelly Sansom

The Conversation

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Wondering if you’re a ‘light’ or ‘deep’ sleeper? The science isn’t that simple

If the slightest sound wakes you, you might wish you slept more deeply. But several factors shape how much shut-eye you get.

21.04.2026 10

The Conversation

Kelly Sansom

Why do some people need less sleep than others? A gene variation could have something to do with it

A small proportion of people can do well on only a few hours of sleep a night. Here’s why that might be.

03.06.2025 10

The Conversation

Kelly Sansom