The Charter of French language and its regulations govern the consultation of English-language content.
That depends. Don’t forget that your level of participation is up to you!
If in doubt, select the preheat option. Your challenges will then start with a warm-up phase, which will gradually increase the temperature of the rooms just before the challenge gets underway.
Don’t forget: you don’t have to lift a finger. Your thermostat settings will gradually return to their regular temperature when the challenge ends.