According to a survey conducted by the Russian Public Opinion Research Center (VTsIOM), 25% of Orthodox Russians observe the fast more or less. 14% of those polled observe only Great Lent, while 9% observe the majority of the other fasting periods. 2% strictly observe all the fasts. More than half (54%) of those who fast during Great Lent give up alcohol, 52% do not eat fatty foods, and over a third (39%) do not use foul language. 18% of Orthodox Russians who observe fasting seasons renounce conjugal relations during Great Lent. The survey was conducted on March 7, with 1,600 people over 18.
Source in Russian