Sleep matters. It affects your mood, focus, motivation and long-term health. Yet many of us struggle to get enough of it.

The best sleep trackers can help you understand what’s happening overnight and research suggests we’re more likely to improve habits when we measure them.

But a new wave of sleep tech goes even further. These devices don’t just monitor your rest, they claim to actively shape it.

From adjusting temperature and masking noise to delivering calming audio and personalized coaching, here’s how sleep tech can optimize your rest.