How do weather conditions affect your mood? >>>> (Can weather affect your mood?)
Some articles to read about the issue:
Don’t be Sad: how to beat seasonal affective disorder (The Guardian)
Could I have Sad or is winter just making me miserable? (The Guardian)
Does sunshine make us happier? (BBC)
The weird ways the weather makes you buy things you didn’t plan to (The Washington Post)
Word formation: Tell me all the adjectives you can think of connected with the verb TO SLEEP
Listening exercise to do: 'When do you feel sleepy?' (6 Minute English, BBC Learning English)