How long should you study each day?
Aim for two to four hours of focused study most days, not a marathon. Work in blocks of about 25 to 50 minutes, then take a short break. Two or three good hours spread out across the day beat six tired ones in a row. The number on the clock matters way less than how locked in you actually are.
There's no magic number that fits everyone. A high schooler might do fine with one or two solid hours after class. Someone cramming for finals or a big exam might push to five or six. But past a certain point your brain stops absorbing and you're just moving your eyes across the page. That's wasted time dressed up as effort.
The trick is shorter blocks with real breaks. Study for 25 to 50 minutes, then step away for 5 or 10. Get water, stretch, look out a window. After a few rounds, take a longer break. Your brain actually needs that downtime to lock in what you just learned. Skipping breaks to grind longer usually backfires.
Also, what you do in those hours counts more than how many there are. One hour of testing yourself with flashcards or practice questions beats three hours of rereading your notes. So spread your studying out, keep the sessions short and sharp, and stop when you're fried instead of pushing through.