5 fruit and veg, 8 hours’ sleep: Should we trust daily health targets?

Many of us aim for “recommended dailies” such as 10,000 steps, 2000 calories or 2 minutes of tooth brushing. But where do these figures come from and are they supported by evidence?

5 fruit and veg, 8 hours’ sleep: Should we trust daily health targets?
Many of us aim for “recommended dailies” such as 10,000 steps, 2000 calories or 2 minutes of tooth brushing. But where do these figures come from and are they supported by evidence?