On average, I should move to Tonga
The BBC has a handy-dandy flab calculator, which takes your age, gender, height and weight, and then compares you with similarly-aged people across the globe.
Surprisingly, the USA comes in only seventh place on the global fat scale—for men aged 45–59 years—with the UK at a trim and svelte fifteenth.
Sadly, I'm more representative of the average Tongan! (sad)