Thinking with your head generally refers to "Logic" in thought processes rather than thinking emotionally.
"Get in your head" typically refers to overthinking or becoming consumed by negative thoughts or emotions. It can also refer to someone or something having a strong influence on your thoughts or behaviors.
"Dive in head first" is to rush into a situation without thinking.
"My head is on my shoulders" means they are thinking right, they have their head in the right place.
That all depends are what you're thinking. If they are innocent thoughts, probably so. Congratulations!
Thoughts aloud means when you are acting the person says what they are thinking from their head.
The idiom "I lost my head" means that someone acted impulsively or irrationally, often due to strong emotions or stress, without thinking things through carefully. It suggests making a hasty decision or saying something out of anger.
thinking is more important than physical activity
"You were on my mind" means that someone was thinking about you or had you in their thoughts. It suggests that you were occupying their thoughts or emotions.
It means that you are putting some time and effort into what you are thinking about. It isn't the first thing that pops into your head.
It means they're thinking about you instead of what they're supposed to be thinking about. This term is sometimes used before sporting events if one participant is trying to psych out the other.
Thinking?
It mean's your brain was thinking about fish while falling asleep and focused on it.