As from October 26th on, there are a lot of differences between the regions of Belgium. In some regions, indoor classes can still take place without contact and with respect for distance for +12, with contact for -12. In the Brussels region, sport facilitites will be closed, while in other regions youth -12 can still take part in classes, while facilitites are closed for +12. Also the local authoritities can take their proper measures. Please take a look at the measures for your region and city.
Stay safe, stay healthy and keep faith!