It's great to drink lots of water, your info is excellent!
However, i don't think at all that there is much association between 睡前喝水 and 腦血栓.
For 腦血栓 prevention, you need control your Blood pressure, Diabetic, cholestrol problem, and daily 81mg aspirin will be great, and stop smoking. 睡前喝水 way more in the bottom in the list if has any association.
