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In addition to fatigue and increased hunger, living with constant sleep deprivation and stress has other effects, some long-term. Experts explain the risks – and how to limit the damage, or at least some of it

By now, this has become a daily challenge: how many hours of sleep can one get in a night riddled with air-raid alerts, racing to shelter and attempts at shuteye before being woken up again. And not just how many hours in total, but also how long one can sleep uninterrupted. All this comes before the real challenge – staying awake during the day, functioning as normally as possible and perhaps even forgetting – until the next siren – that this is an open-ended state of emergency.