A day in the life Anti-ageing expert Aubrey de Grey

The gerontologist has a relaxed approach to food, sleep and screens — but he’s a stickler when it comes to diagnostic tests

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I typically wake up between seven and eight in the morning. I don’t use an alarm clock — I like to wake up to daylight. It’s very rare that I'll ever set one; only if I have to get up unusually early.

The first thing I do after waking is make myself a large vat of coffee. Then I check my emails. I've never had a problem with screen use first thing. I know a lot of people say to avoid devices early in the day, but I just don’t have those issues.

I’ve never been a breakfast person. I've been that way my whole life. I'm one of those infuriatingly lucky people with very little appetite. I maintain a constant weight without much effort. I don’t have a rigid schedule for meals; I just graze on snacks. I've never been someone who eats three square meals.