It can be pressured at times. Everyone can go according to the way they can go. Bochurim can go for 10 hours a day. In my personal opinion, it’s because they take breaks during the day. It’s not 10 hours a day straight, but it’s broken up. Also. for the time tnat you do learn straight, you have a solid chavrusa. Yungerleit can go learn all day if that’s how they can run. Some people can’t learn all day.

You can take a shower if it’s for hygiene. You can’t take a shower if it’s for pleasure. I’m not a posek, but I think that you can use warm water. Everybody should ask their rav. Personally, nowadays in the heat that is engulfing the US, you can’t go for a week and a half without a shower. Even if you want to wait until Friday l’kavod Shabbos, that’s kind of crazy.

WIY is right. That’s what I meant