Exercise and sleep 7+ hours
Came across this post about how exercising regularly slows down your biological aging but only if you sleep more than 7 hours a day. If you're exercising and sleeping less than 7 hours a day, it's actually speeding your biological aging.
It's taken from the research paper titled "Inverted U-shaped relationship between sleep duration and phenotypic age in US adults: a population-based study" and the study was done in the US. And the paper clearly mentions, "[...] sleep duration may vary across different countries and regions [...]", but the importance of sleep can't be denied.
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