Every NEET aspirant ever: “Okay, today I’ll focus only on physics.”
Me, 10 minutes later: 
“What’s the derivation of that formula? Wait, did I revise amino acids? Oh shit, organic chemistry! What’s the NEET cut-off this year? Let me check toppers’ routines… should I sleep 6 or 8 hours? Is Maggi good for memory??”
Basically, my brain during NEET prep = Google Chrome with 200 tabs open, and 199 of them are frozen 