9. Estonia
Mean BMI: 25.5
The rate of regularly physically active people in Estonia, the next one on the list of thinnest countries in Europe is slowly growing, but it is on the rise, which is a good thing. That was represented in a research that showed that around 45% of Estonian population is involved in some kind of regular weekly (twice a week for 30 minutes) physical activity, which is 8.7% more than in 2010.