Sort:  

When this sudden change happens, it's a time when it's easy to get sick, right?

Naw. It's through the whole year, not between two days:

Summers are very hot 🥵 and winters are very cold 🥶.

Brazil seems to have a more stable weather throughout the year.

So you have to take constant care of yourself.

Yes, it's true, unlike many countries, here the seasons are limited to heat and rain.