Hello everyone, it is definitely summer time in Tokyo! With the heat index today it is 46C.
Here is today's idiom "spread oneself too thin".
This means that someone has taken on too many activities at the same time.
Example 1
A. Bobby is sure busy these days. He's coaching the basketball team, volunteering at the English club, helping seniors get around and working full time.
B. Yes, I'm worried about him. I really think he's spreading himself too thin.
Example 2
You have to be careful that you don't spread yourself too thin. You don't want to get sick from all the activities you are doing.