Zero-gravity sleep mimics the neutral body posture astronauts use in space. On Earth, this typically means lying on your back ...

This is important because, as Gruen explained, “a spine that is put in a non-neutral position is putting unnecessary pressure ...

Unlike the Helix Midnight Luxe — a mattress-in-a-box delivered for free to your doorstep — the Saatva RX arrives flat via ...