I love tropical fruit and strawberries. My good friend Emily suggested I eat fruits more in season back when we were in school for Phys Ed. I took her advice to heart and have made an effort since then to choose fruits and vegetables in season, although I do admit to buying berries year round if available.
Practicing and studying Traditional Chinese Medicine, I have learned that it is ideal to eat more cooked, warm foods in the winter and cool, raw foods are best in the summer. This makes it easier for the body to digest the food we eat, as we work harder to stay warm in the winter and could use a little help to stay cool in the summer.
The amount of sunlight changes with the seasons and our sleep patterns can go along with that. Sleep a bit more in the winter and a bit less in the summer.
When I first studied psychology, we did a short questionnaire to determine how much of a morning or evening person we were and I was surprised to learn I was in the middle. This appears to be genetic to an extent. Here is a questionnaire to take and find out your type:
https://www.cet-surveys.com/index.php?sid=61524
Be sure to scroll down after you get your results, as the questionnaire will list your estimated peak time of melatonin production and your ideal bedtime. Provided that you are able to answer the questions based on your true ideals(you must know them somehow), it is ideal for you to keep a sleep schedule based on the bedtime listed. I have known since the start of university that I am not a morning person, and this has not changed at all!
Exercise in the winter is different, as the weather makes it difficult to go for a bike ride or run, walks are possible, although not the same. Winter activities like skating, snowshoeing, cross country skiing, downhill skiing, and snowboarding are great when available. Ordinarily, one could exercise at the gym, which are unfortunately closed at this time. That leaves us with home workouts for now. No better time then winter to get into more mindful movement like yoga and tai chi, which fulfills the need for movement in a mindful way.