

Though his class is only in the trial stages at his club, he hopes to offer it to the whole of Scotland and the UK before long. Given what we know about the benefits of sleep, it's surprising we haven't seen sleep workouts offered before now. Those calories, he says, are "used to maintain essential functions in the body." That maintenance, David Lloyd and countless health care practitioners will tell you, is crucial for overall long-term health. A human who weighs 150 lbs will burn up to 63 calories during every 60 minute cycle of restorative rest. 42 calories for every pound we weigh per hour of sleep. According to Dr Steven Halls, a Canadian doctor who manages the pretty hilarious fitness site Moose and Doc, we burn calories (even while sleeping) based on body weight. Still, if you can only justify making time for a fitness class that promises to burn calories, note that Napericise has you covered there too. Sleep, you may have guessed, regulates cortisol.

That response is a throwback to our cave human days, when stress usually meant food was scarce and survival was threatened. Our stress hormone cortisol spikes when we're stretched too thin causing our bodies to cling to existing fat while simultaneously making us crave both high-carb and high-fat foods. The true benefit of Napercise, it seems, is actually stress management or rather, cortisol management. Pinkham confirms that "when we are sleep deprived we lack the energy to exercise regularly, and also the mental clarity to make good decisions about the food we eat, which could negatively impact our physical health in the long-run." So it's actually quite sound to call Napercise a proper fitness class, even though the goal is sleep, not sweat. Weight gain is another detrimental consequence of sleep deprivation. Simply being tired the next day is the least of it. Unsurprisingly, Pinkham also says "sleep is a lot more important than people realise" and we need to stop thinking of the obvious short-term consequences of not getting enough rest. Kathryn Pinkham, a sleep and dream expert, who helped develop Napercise with Lloyd says fatigue brings with it a "higher risk of developing anxiety or depression." Of course, parents aren't the only ones at risk. Sleep deprivation increases one's chances of heart disease, diabetes and a barrage of mental health issues. That life-crushing qualifier isn't an overstatement. Bloodshot, puffy eyes and life-crushing exhaustion is the norm for almost all of them though: about 86% report feeling fatigued. At the end of the day (literally), five hours of sleep a night is the norm for 26% of new moms and dads. Those hit hardest are new parents who typically lose two hours of sleep per night during their baby's first five months and then about an hour a night until their child is two.

In fact, Canadians don't get enough shuteye and sleep deprivation is considered an epidemic of global proportions (45% of humans need more pillow time). He wants to address the UK's "tiredness epidemic", though they're not the only sleepy nation. Lloyd's ultimate aim isn't just fitness, exactly.
