My Expert Article for STELLA, The Sunday Telegraph 26th Nov 17 (The New Sleep Rules)
Highlighted from The New Sleep Rules
Ironically, sleep deprivation leads to weight gain. The reason? ‘During sleep, levels of ghrelin, the so-called hunger hormone, decrease, because we require less energy to sleep,’ says Natalie Pennicotte-Collier, sleep ‘super coach’ and therapist to elite athletes, including Team GB. ‘People who don’t sleep enough end up with too much ghrelin in their system.’ Disrupted nights also leads to a decrease in leptin, the hormone that tells the body when it’s full, Pennicotte-Collier adds. ‘Sleep-deprived bodies cry out for more food. If you have more than a year of five hours’ sleep or less a night, you could gain 10-15lbs.’ But our hormones themselves can be responsible for our poor sleep: if we’re stressed, with raised cortisol levels, our bodies find it impossible to switch off. And so the cycle continues. Pennicotte-Collier recommends sticking to the same bedtime and wake-up time, even on the weekends, to regulate your sleep and give your hormones a fighting chance.