Alex Zhavoronkov wants to live to be 120 – which is what you might expect of someone whose business card reads “Chief Longevity Officer”. Reaching “120 is likely achievable”, says 43-year-old Zhavoronkov, founder of Hong Kong-based longevity tech company Deep Longevity, via phone from Shanghai, where he’s just emerged from quarantine. “People compete on how fast they can run, how much money they make, but no one is competing on longevity. If you don’t challenge yourself, you won’t live long, but if you set ambitious but achievable goals you can do it.” Big money is being poured into ageing as…