Hello there, This is Kazuma Aida.
Outside is just little bit freezing.
But, tomorrow will freezing outside.
This situations hydration will be forgetful.
I have a experience the situation.
When I was 20 or 22,
I was playing tennis 3~5 hours in winter.
I didn’t have hydration, then got a cramp.
I didn’t know why that moment.
But, I realized,
” I need hydration during winter season”
So, please don’t forget even during winter season.
LAFINO Kazuma Aida.