How do you guys keep working hard?

I try do the same too
But the body doesn't keep up
Head hurts
Brain hurts
It feels exhausting
I am currently hell weak and need to become strong anyhow
Do you guys take a break? When you don't feel k Bhai ab nhi ho pa rha
Please tell
I don't wanna stay weak forever
I just wanna study
I don't have anything else in my life
But my mind, body isn't keeping up