When you log into your account using a web browser you will see a Sumdog Warm Up before you reach your dashboard. The Warm Up acts as a loading screen while the normal games are loading in the background.
The questions asked in the Warm Up will be simple quick-fire questions. You will earn coins for each question you answer correctly.
If you are using the Sumdog app you will not see the Warm Up as the games are already installed on the Sumdog app.