Since I first tested sunrise alarm clocks last winter, I’ve come to suspect that there’s no such thing as getting up on the wrong side of bed. What we ought to be worried about is waking up on the wrong side of dawn. The Guardian’s journalism is independent. We will earn a commission if you buy something through an affiliate link. Learn more. During summer (and other times of the year, for late risers), the sunrise begins to rouse us before we wake up. The brain kicks into gear and sends signals to initiate all sorts of bodily processes, from metabolism to hormone release, which helps us to feel ready for the day. It’s a fundament of our circadian rhythm – and we miss out on it whenever we wake before it gets light. That is where a sunrise alarm clock can fill the gap. These devices simulate dawn, glowing with increasing brightness in the run-up to your alarm, and for many this reduces grogginess and improves alertness upon waking. I’ve tested more than a dozen …